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66666666606 = 232310119312477
BaseRepresentation
bin111110000101101001…
…001001101001101110
320101002010002120002020
4332011221021221232
52043013131312411
650343134011010
74550030213331
oct760551115156
9211063076066
1066666666606
1126300660391
1210b06646a66
136395994027
143326040618
151b02b76606
hexf85a49a6e

66666666606 has 64 divisors (see below), whose sum is σ = 140637482496. Its totient is φ = 21026192000.

The previous prime is 66666666589. The next prime is 66666666643. The reversal of 66666666606 is 60666666666.

Adding to 66666666606 its sum of digits (60), we get a palindrome (66666666666).

It can be divided in two parts, 6666666660 and 6, that added together give a palindrome (6666666666).

It is a self number, because there is not a number n which added to its sum of digits gives 66666666606.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26913040 + ... + 26915516.

It is an arithmetic number, because the mean of its divisors is an integer number (2197460664).

Almost surely, 266666666606 is an apocalyptic number.

66666666606 is an abundant number, since it is smaller than the sum of its proper divisors (73970815890).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66666666606 is a wasteful number, since it uses less digits than its factorization.

66666666606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4537.

The product of its (nonzero) digits is 60466176, while the sum is 60.

The spelling of 66666666606 in words is "sixty-six billion, six hundred sixty-six million, six hundred sixty-six thousand, six hundred six".

Divisors: 1 2 3 6 23 46 69 101 138 202 303 606 1931 2323 2477 3862 4646 4954 5793 6969 7431 11586 13938 14862 44413 56971 88826 113942 133239 170913 195031 250177 266478 341826 390062 500354 585093 750531 1170186 1501062 4485713 4783087 5754071 8971426 9566174 11508142 13457139 14349261 17262213 26914278 28698522 34524426 110011001 220022002 330033003 483091787 660066006 966183574 1449275361 2898550722 11111111101 22222222202 33333333303 66666666606