864036625922 has 6 divisors (see below), whose sum is σ = 1296056910729. Its totient is φ = 432017655680.

The previous prime is 864036625897. The next prime is 864036625961. The reversal of 864036625922 is 229526630468.

It can be written as a sum of positive squares in 2 ways, for example, as 801596111761 + 62440514161 = 895319^2 + 249881^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=657281.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 985922 + ... + 1643202.

Almost surely, 2^864036625922 is an apocalyptic number.

864036625922 is a deficient number, since it is larger than the sum of its proper divisors (432020284807).

864036625922 is an frugal number, since it uses more digits than its factorization.

864036625922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1314564 (or 657283 counting only the distinct ones).

The product of its (nonzero) digits is 7464960, while the sum is 53.

The spelling of 864036625922 in words is "eight hundred sixty-four billion, thirty-six million, six hundred twenty-five thousand, nine hundred twenty-two".