864985562116 has 27 divisors (see below), whose sum is σ = 1639167872853. Its totient is φ = 399212945040.

The previous prime is 864985562087. The next prime is 864985562123. The reversal of 864985562116 is 611265589468.

The square root of 864985562116 is 930046.

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., 127956444100 + 737029118016 = 357710^2 + 858504^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 24163311 + ... + 24199081.

Almost surely, 2^864985562116 is an apocalyptic number.

864985562116 is the 930046-th square number.

It is an amenable number.

864985562116 is a deficient number, since it is larger than the sum of its proper divisors (774182310737).

864985562116 is an frugal number, since it uses more digits than its factorization.

864985562116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71572 (or 35786 counting only the distinct ones).

The product of its digits is 24883200, while the sum is 61.

The spelling of 864985562116 in words is "eight hundred sixty-four billion, nine hundred eighty-five million, five hundred sixty-two thousand, one hundred sixteen".