864688370 has 32 divisors (see below), whose sum is σ = 1915619328. Its totient is φ = 273659328.

The previous prime is 864688351. The next prime is 864688373. The reversal of 864688370 is 73886468.

It is a happy number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (864688373) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 474194 + ... + 476013.

It is an arithmetic number, because the mean of its divisors is an integer number (59863104).

Almost surely, 2^864688370 is an apocalyptic number.

864688370 is an abundant number, since it is smaller than the sum of its proper divisors (1050930958).

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

864688370 is a wasteful number, since it uses less digits than its factorization.

864688370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 950234.

The product of its (nonzero) digits is 1548288, while the sum is 50.

The square root of 864688370 is about 29405.5839935207. The cubic root of 864688370 is about 952.6935083086.

The spelling of 864688370 in words is "eight hundred sixty-four million, six hundred eighty-eight thousand, three hundred seventy".