864669272 has 8 divisors (see below), whose sum is σ = 1621254900. Its totient is φ = 432334632.

The previous prime is 864669269. The next prime is 864669277. The reversal of 864669272 is 272966468.

It is a happy number.

864669272 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a self number, because there is not a number n which added to its sum of digits gives 864669272.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (864669277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54041822 + ... + 54041837.

Almost surely, 2^864669272 is an apocalyptic number.

It is an amenable number.

864669272 is a deficient number, since it is larger than the sum of its proper divisors (756585628).

864669272 is a wasteful number, since it uses less digits than its factorization.

864669272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108083665 (or 108083661 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 50.

The square root of 864669272 is about 29405.2592574866. The cubic root of 864669272 is about 952.6864943465.

The spelling of 864669272 in words is "eight hundred sixty-four million, six hundred sixty-nine thousand, two hundred seventy-two".