722865864 has 32 divisors (see below), whose sum is σ = 2065331520. Its totient is φ = 206533056.

The previous prime is 722865853. The next prime is 722865883. The reversal of 722865864 is 468568227.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2151219 + ... + 2151554.

It is an arithmetic number, because the mean of its divisors is an integer number (64541610).

Almost surely, 2^722865864 is an apocalyptic number.

It is an amenable number.

722865864 is an abundant number, since it is smaller than the sum of its proper divisors (1342465656).

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

722865864 is a wasteful number, since it uses less digits than its factorization.

722865864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4302789 (or 4302785 counting only the distinct ones).

The product of its digits is 1290240, while the sum is 48.

The square root of 722865864 is about 26886.1649180392. The cubic root of 722865864 is about 897.4685506111.

It can be divided in two parts, 722 and 865864, that added together give a triangular number (866586 = T₁₃₁₆).

The spelling of 722865864 in words is "seven hundred twenty-two million, eight hundred sixty-five thousand, eight hundred sixty-four".