8624400664 has 32 divisors (see below), whose sum is σ = 17645221440. Its totient is φ = 3919204000.

The previous prime is 8624400649. The next prime is 8624400721. The reversal of 8624400664 is 4660044268.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 434787 + ... + 454189.

It is an arithmetic number, because the mean of its divisors is an integer number (551413170).

Almost surely, 2^8624400664 is an apocalyptic number.

It is an amenable number.

8624400664 is an abundant number, since it is smaller than the sum of its proper divisors (9020820776).

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

8624400664 is a wasteful number, since it uses less digits than its factorization.

8624400664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24471 (or 24467 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 40.

The square root of 8624400664 is about 92867.6513324204. The cubic root of 8624400664 is about 2050.7354619901.

The spelling of 8624400664 in words is "eight billion, six hundred twenty-four million, four hundred thousand, six hundred sixty-four".