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84668806 = 21729431997
BaseRepresentation
bin1010000101111…
…11000110000110
312220022121202201
411002333012012
5133133400211
612222425114
72045446555
oct502770606
9186277681
1084668806
114387aa22
122443219a
13147064b1
14b35dd9c
1576770c1
hex50bf186

84668806 has 32 divisors (see below), whose sum is σ = 142417440. Its totient is φ = 37556736.

The previous prime is 84668797. The next prime is 84668821. The reversal of 84668806 is 60886648.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41400 + ... + 43396.

It is an arithmetic number, because the mean of its divisors is an integer number (4450545).

Almost surely, 284668806 is an apocalyptic number.

84668806 is a gapful number since it is divisible by the number (86) formed by its first and last digit.

84668806 is a deficient number, since it is larger than the sum of its proper divisors (57748634).

84668806 is a wasteful number, since it uses less digits than its factorization.

84668806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2088.

The product of its (nonzero) digits is 442368, while the sum is 46.

The square root of 84668806 is about 9201.5654102984. The cubic root of 84668806 is about 439.1111636753. Note that the first 4 decimals are identical.

The spelling of 84668806 in words is "eighty-four million, six hundred sixty-eight thousand, eight hundred six".

Divisors: 1 2 17 29 34 43 58 86 493 731 986 1247 1462 1997 2494 3994 21199 33949 42398 57913 67898 85871 115826 171742 984521 1459807 1969042 2490259 2919614 4980518 42334403 84668806