864036684 has 36 divisors (see below), whose sum is σ = 2496106704. Its totient is φ = 246867552.

The previous prime is 864036671. The next prime is 864036689. The reversal of 864036684 is 486630468.

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (864036689) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1714107 + ... + 1714610.

Almost surely, 2^864036684 is an apocalyptic number.

864036684 is a gapful number since it is divisible by the number (84) formed by its first and last digit.

It is an amenable number.

864036684 is an abundant number, since it is smaller than the sum of its proper divisors (1632070020).

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

864036684 is a wasteful number, since it uses less digits than its factorization.

864036684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3428734 (or 3428729 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 45.

The square root of 864036684 is about 29394.5009142867. The cubic root of 864036684 is about 952.4541106707.

The spelling of 864036684 in words is "eight hundred sixty-four million, thirty-six thousand, six hundred eighty-four".