864367812 has 72 divisors (see below), whose sum is σ = 2724076992. Its totient is φ = 224510400.

The previous prime is 864367799. The next prime is 864367813. The reversal of 864367812 is 218763468.

It is not an unprimeable number, because it can be changed into a prime (864367813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 153139 + ... + 158682.

Almost surely, 2^864367812 is an apocalyptic number.

It is an amenable number.

864367812 is an abundant number, since it is smaller than the sum of its proper divisors (1859709180).

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

864367812 is a wasteful number, since it uses less digits than its factorization.

864367812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311849 (or 311844 counting only the distinct ones).

The product of its digits is 387072, while the sum is 45.

The square root of 864367812 is about 29400.1328568427. The cubic root of 864367812 is about 952.5757659780.

The spelling of 864367812 in words is "eight hundred sixty-four million, three hundred sixty-seven thousand, eight hundred twelve".