864992652 has 12 divisors (see below), whose sum is σ = 2018316216. Its totient is φ = 288330880.

The previous prime is 864992647. The next prime is 864992669. The reversal of 864992652 is 256299468.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 864992595 and 864992604.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36041349 + ... + 36041372.

It is an arithmetic number, because the mean of its divisors is an integer number (168193018).

Almost surely, 2^864992652 is an apocalyptic number.

It is an amenable number.

864992652 is an abundant number, since it is smaller than the sum of its proper divisors (1153323564).

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

864992652 is a wasteful number, since it uses less digits than its factorization.

864992652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72082728 (or 72082726 counting only the distinct ones).

The product of its digits is 1866240, while the sum is 51.

The square root of 864992652 is about 29410.7574196925. The cubic root of 864992652 is about 952.8052454767.

The spelling of 864992652 in words is "eight hundred sixty-four million, nine hundred ninety-two thousand, six hundred fifty-two".