864523512 has 48 divisors (see below), whose sum is σ = 2376377640. Its totient is φ = 283871808.

The previous prime is 864523507. The next prime is 864523531. The reversal of 864523512 is 215325468.

864523512 is a `hidden beast` number, since 8 + 645 + 2 + 3 + 5 + 1 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 84783 + ... + 94430.

Almost surely, 2^864523512 is an apocalyptic number.

It is an amenable number.

864523512 is an abundant number, since it is smaller than the sum of its proper divisors (1511854128).

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

864523512 is a wasteful number, since it uses less digits than its factorization.

864523512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179292 (or 179285 counting only the distinct ones).

The product of its digits is 57600, while the sum is 36.

The square root of 864523512 is about 29402.7806848264. The cubic root of 864523512 is about 952.6329588921.

The spelling of 864523512 in words is "eight hundred sixty-four million, five hundred twenty-three thousand, five hundred twelve".