957699966 has 16 divisors (see below), whose sum is σ = 1916283024. Its totient is φ = 319086144.

The previous prime is 957699923. The next prime is 957699989. The reversal of 957699966 is 669996759.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 957699897 and 957699906.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22255 + ... + 49098.

It is an arithmetic number, because the mean of its divisors is an integer number (119767689).

Almost surely, 2^957699966 is an apocalyptic number.

957699966 is an abundant number, since it is smaller than the sum of its proper divisors (958583058).

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

957699966 is a wasteful number, since it uses less digits than its factorization.

957699966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73595.

The product of its digits is 49601160, while the sum is 66.

The square root of 957699966 is about 30946.7278722646. The cubic root of 957699966 is about 985.6963703228.

The spelling of 957699966 in words is "nine hundred fifty-seven million, six hundred ninety-nine thousand, nine hundred sixty-six".