864668968 has 8 divisors (see below), whose sum is σ = 1621254330. Its totient is φ = 432334480.

The previous prime is 864668951. The next prime is 864668993. The reversal of 864668968 is 869866468.

It can be written as a sum of positive squares in only one way, i.e., 554979364 + 309689604 = 23558^2 + 17598^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54041803 + ... + 54041818.

Almost surely, 2^864668968 is an apocalyptic number.

It is an amenable number.

864668968 is a deficient number, since it is larger than the sum of its proper divisors (756585362).

864668968 is a wasteful number, since it uses less digits than its factorization.

864668968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108083627 (or 108083623 counting only the distinct ones).

The product of its digits is 23887872, while the sum is 61.

The square root of 864668968 is about 29405.2540883428. The cubic root of 864668968 is about 952.6863826981.

The spelling of 864668968 in words is "eight hundred sixty-four million, six hundred sixty-eight thousand, nine hundred sixty-eight".