976164561 has 16 divisors (see below), whose sum is σ = 1448699200. Its totient is φ = 649638144.

The previous prime is 976164559. The next prime is 976164569. The reversal of 976164561 is 165461679.

976164561 is a `hidden beast` number, since 9 + 76 + 16 + 4 + 561 = 666.

It is not a de Polignac number, because 976164561 - 2¹ = 976164559 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (976164569) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15751 + ... + 46908.

It is an arithmetic number, because the mean of its divisors is an integer number (90543700).

Almost surely, 2^976164561 is an apocalyptic number.

It is an amenable number.

976164561 is a deficient number, since it is larger than the sum of its proper divisors (472534639).

976164561 is a wasteful number, since it uses less digits than its factorization.

976164561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63245 (or 63239 counting only the distinct ones).

The product of its digits is 272160, while the sum is 45.

The square root of 976164561 is about 31243.6323272439. The cubic root of 976164561 is about 991.9908788969.

The spelling of 976164561 in words is "nine hundred seventy-six million, one hundred sixty-four thousand, five hundred sixty-one".