666892956 has 48 divisors (see below), whose sum is σ = 1621114880. Its totient is φ = 213140160.

The previous prime is 666892943. The next prime is 666892973. The reversal of 666892956 is 659298666.

It is a junction number, because it is equal to n+sod(n) for n = 666892896 and 666892905.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32325 + ... + 48771.

Almost surely, 2^666892956 is an apocalyptic number.

It is an amenable number.

666892956 is an abundant number, since it is smaller than the sum of its proper divisors (954221924).

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

666892956 is a wasteful number, since it uses less digits than its factorization.

666892956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16594 (or 16592 counting only the distinct ones).

The product of its digits is 8398080, while the sum is 57.

The square root of 666892956 is about 25824.2706770201. The cubic root of 666892956 is about 873.6792945256.

The spelling of 666892956 in words is "six hundred sixty-six million, eight hundred ninety-two thousand, nine hundred fifty-six".