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6666666 = 232394649
BaseRepresentation
bin11001011011100110101010
3110112200221120
4121123212222
53201313131
6354520110
7110444226
oct31334652
913480846
106666666
113843846
122296036
1314c5596
14c57786
158ba496
hex65b9aa

6666666 has 16 divisors (see below), whose sum is σ = 13392000. Its totient is φ = 2212448.

The previous prime is 6666617. The next prime is 6666679.

Multipling 6666666 by its sum of digits (42), we get a palindrome (279999972).

6666666 is nontrivially palindromic in base 10.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a nude number because it is divisible by every one of its digits.

6666666 is a modest number, since divided by 6666 gives 666 as remainder.

6666666 is a nontrivial repdigit in base 10.

It is a plaindrome in base 10.

It is a nialpdrome in base 10.

It is a zygodrome in base 10.

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 7 ways as a sum of consecutive naturals, for example, 891 + ... + 3758.

It is an arithmetic number, because the mean of its divisors is an integer number (837000).

Almost surely, 26666666 is an apocalyptic number.

6666666 is an abundant number, since it is smaller than the sum of its proper divisors (6725334).

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

6666666 is a wasteful number, since it uses less digits than its factorization.

6666666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4893.

The product of its digits is 279936, while the sum is 42.

The square root of 6666666 is about 2581.9887683722. The cubic root of 6666666 is about 188.2071995026.

The spelling of 6666666 in words is "six million, six hundred sixty-six thousand, six hundred sixty-six".