864958628 has 12 divisors (see below), whose sum is σ = 1514149980. Its totient is φ = 432344352.

The previous prime is 864958607. The next prime is 864958651. The reversal of 864958628 is 826859468.

It can be written as a sum of positive squares in 2 ways, for example, as 857786944 + 7171684 = 29288^2 + 2678^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18563 + ... + 45546.

It is an arithmetic number, because the mean of its divisors is an integer number (126179165).

Almost surely, 2^864958628 is an apocalyptic number.

It is an amenable number.

864958628 is a deficient number, since it is larger than the sum of its proper divisors (649191352).

864958628 is a wasteful number, since it uses less digits than its factorization.

864958628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67486 (or 67484 counting only the distinct ones).

The product of its digits is 6635520, while the sum is 56.

The square root of 864958628 is about 29410.1789861946. The cubic root of 864958628 is about 952.7927526266.

The spelling of 864958628 in words is "eight hundred sixty-four million, nine hundred fifty-eight thousand, six hundred twenty-eight".