864502005796 has 81 divisors (see below), whose sum is σ = 1801226460369. Its totient is φ = 362616540000.

The previous prime is 864502005779. The next prime is 864502005799. The reversal of 864502005796 is 697500205468.

The square root of 864502005796 is 929786.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 127884912100 + 736617093696 = 357610^2 + 858264^2 .

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (864502005799) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 265917171 + ... + 265920421.

Almost surely, 2^864502005796 is an apocalyptic number.

864502005796 is the 929786-th square number.

It is an amenable number.

864502005796 is an abundant number, since it is smaller than the sum of its proper divisors (936724454573).

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

864502005796 is a wasteful number, since it uses less digits than its factorization.

864502005796 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6554 (or 3277 counting only the distinct ones).

The product of its (nonzero) digits is 3628800, while the sum is 52.

The spelling of 864502005796 in words is "eight hundred sixty-four billion, five hundred two million, five thousand, seven hundred ninety-six".