957668921 has 8 divisors (see below), whose sum is σ = 1047535104. Its totient is φ = 868270320.

The previous prime is 957668893. The next prime is 957668923. The reversal of 957668921 is 129866759.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 957668921 - 2¹⁰ = 957667897 is a prime.

It is not an unprimeable number, because it can be changed into a prime (957668923) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 112601 + ... + 120806.

It is an arithmetic number, because the mean of its divisors is an integer number (130941888).

Almost surely, 2^957668921 is an apocalyptic number.

It is an amenable number.

957668921 is a deficient number, since it is larger than the sum of its proper divisors (89866183).

957668921 is a wasteful number, since it uses less digits than its factorization.

957668921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233791.

The product of its digits is 1632960, while the sum is 53.

The square root of 957668921 is about 30946.2262804368. The cubic root of 957668921 is about 985.6857193620.

The spelling of 957668921 in words is "nine hundred fifty-seven million, six hundred sixty-eight thousand, nine hundred twenty-one".