864445660 has 48 divisors (see below), whose sum is σ = 2057882400. Its totient is φ = 302379264.

The previous prime is 864445657. The next prime is 864445669. The reversal of 864445660 is 66544468.

864445660 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (864445669) 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, 82555 + ... + 92434.

It is an arithmetic number, because the mean of its divisors is an integer number (42872550).

Almost surely, 2^864445660 is an apocalyptic number.

It is an amenable number.

864445660 is an abundant number, since it is smaller than the sum of its proper divisors (1193436740).

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

864445660 is a wasteful number, since it uses less digits than its factorization.

864445660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175030 (or 175028 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 43.

The square root of 864445660 is about 29401.4567666298. The cubic root of 864445660 is about 952.6043625588.

The spelling of 864445660 in words is "eight hundred sixty-four million, four hundred forty-five thousand, six hundred sixty".