864059812 has 24 divisors (see below), whose sum is σ = 1885222080. Its totient is φ = 336646560.

The previous prime is 864059809. The next prime is 864059813. The reversal of 864059812 is 218950468.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (864059813) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1402387 + ... + 1403002.

It is an arithmetic number, because the mean of its divisors is an integer number (78550920).

Almost surely, 2^864059812 is an apocalyptic number.

It is an amenable number.

864059812 is an abundant number, since it is smaller than the sum of its proper divisors (1021162268).

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

864059812 is a wasteful number, since it uses less digits than its factorization.

864059812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2805411 (or 2805409 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 43.

The square root of 864059812 is about 29394.8943185717. The cubic root of 864059812 is about 952.4626088293.

The spelling of 864059812 in words is "eight hundred sixty-four million, fifty-nine thousand, eight hundred twelve".