877320864 has 72 divisors (see below), whose sum is σ = 2851299360. Its totient is φ = 250662528.

The previous prime is 877320841. The next prime is 877320881. The reversal of 877320864 is 468023778.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (72).

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 11 ways as a sum of consecutive naturals, for example, 215574 + ... + 219605.

It is an arithmetic number, because the mean of its divisors is an integer number (39601380).

Almost surely, 2^877320864 is an apocalyptic number.

877320864 is a gapful number since it is divisible by the number (84) formed by its first and last digit.

It is an amenable number.

877320864 is an abundant number, since it is smaller than the sum of its proper divisors (1973978496).

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

877320864 is a wasteful number, since it uses less digits than its factorization.

877320864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 435202 (or 435191 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 45.

The square root of 877320864 is about 29619.6026982132. The cubic root of 877320864 is about 957.3104930284.

The spelling of 877320864 in words is "eight hundred seventy-seven million, three hundred twenty thousand, eight hundred sixty-four".