857796264 has 64 divisors (see below), whose sum is σ = 2566065600. Its totient is φ = 263936448.

The previous prime is 857796239. The next prime is 857796323. The reversal of 857796264 is 462697758.

857796264 is a `hidden beast` number, since 8 + 5 + 7 + 7 + 9 + 626 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 857796264.

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, 149934 + ... + 155549.

It is an arithmetic number, because the mean of its divisors is an integer number (40094775).

Almost surely, 2^857796264 is an apocalyptic number.

It is an amenable number.

857796264 is an abundant number, since it is smaller than the sum of its proper divisors (1708269336).

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

857796264 is a wasteful number, since it uses less digits than its factorization.

857796264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305511 (or 305501 counting only the distinct ones).

The product of its digits is 5080320, while the sum is 54.

The square root of 857796264 is about 29288.1591091007. The cubic root of 857796264 is about 950.1555660292.

The spelling of 857796264 in words is "eight hundred fifty-seven million, seven hundred ninety-six thousand, two hundred sixty-four".