288320664 has 16 divisors (see below), whose sum is σ = 720801720. Its totient is φ = 96106880.

The previous prime is 288320647. The next prime is 288320671. The reversal of 288320664 is 466023882.

288320664 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6006657 + ... + 6006704.

Almost surely, 2^288320664 is an apocalyptic number.

288320664 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

288320664 is an abundant number, since it is smaller than the sum of its proper divisors (432481056).

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

288320664 is a wasteful number, since it uses less digits than its factorization.

288320664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12013370 (or 12013366 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 39.

The square root of 288320664 is about 16980.0077738498. The cubic root of 288320664 is about 660.6304535930.

The spelling of 288320664 in words is "two hundred eighty-eight million, three hundred twenty thousand, six hundred sixty-four".