877320865 has 16 divisors (see below), whose sum is σ = 1066641408. Its totient is φ = 692660736.

The previous prime is 877320841. The next prime is 877320881. The reversal of 877320865 is 568023778.

It is a cyclic number.

It is not a de Polignac number, because 877320865 - 2²³ = 868932257 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 183394 + ... + 188116.

It is an arithmetic number, because the mean of its divisors is an integer number (66665088).

Almost surely, 2^877320865 is an apocalyptic number.

It is an amenable number.

877320865 is a deficient number, since it is larger than the sum of its proper divisors (189320543).

877320865 is a wasteful number, since it uses less digits than its factorization.

877320865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5208.

The product of its (nonzero) digits is 564480, while the sum is 46.

The square root of 877320865 is about 29619.6027150939. The cubic root of 877320865 is about 957.3104933921.

The spelling of 877320865 in words is "eight hundred seventy-seven million, three hundred twenty thousand, eight hundred sixty-five".