864875964 has 12 divisors (see below), whose sum is σ = 2018043944. Its totient is φ = 288291984.

The previous prime is 864875951. The next prime is 864875981. The reversal of 864875964 is 469578468.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

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, 36036487 + ... + 36036510.

Almost surely, 2^864875964 is an apocalyptic number.

It is an amenable number.

864875964 is an abundant number, since it is smaller than the sum of its proper divisors (1153167980).

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

864875964 is a wasteful number, since it uses less digits than its factorization.

864875964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72073004 (or 72073002 counting only the distinct ones).

The product of its digits is 11612160, while the sum is 57.

The square root of 864875964 is about 29408.7735888459. The cubic root of 864875964 is about 952.7623988937.

The spelling of 864875964 in words is "eight hundred sixty-four million, eight hundred seventy-five thousand, nine hundred sixty-four".