8791664 has 20 divisors (see below), whose sum is σ = 19467504. Its totient is φ = 3767808.

The previous prime is 8791639. The next prime is 8791667. The reversal of 8791664 is 4661978.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8791667) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39137 + ... + 39360.

Almost surely, 2^8791664 is an apocalyptic number.

It is an amenable number.

8791664 is an abundant number, since it is smaller than the sum of its proper divisors (10675840).

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

8791664 is a wasteful number, since it uses less digits than its factorization.

8791664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78512 (or 78506 counting only the distinct ones).

The product of its digits is 72576, while the sum is 41.

The square root of 8791664 is about 2965.0740294300. The cubic root of 8791664 is about 206.3908124428.

The spelling of 8791664 in words is "eight million, seven hundred ninety-one thousand, six hundred sixty-four".