7918664 has 24 divisors (see below), whose sum is σ = 16080210. Its totient is φ = 3654144.

The previous prime is 7918661. The next prime is 7918697. The reversal of 7918664 is 4668197.

It can be written as a sum of positive squares in 3 ways, for example, as 6041764 + 1876900 = 2458^2 + 1370^2 .

It is not an unprimeable number, because it can be changed into a prime (7918661) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1577 + ... + 4280.

Almost surely, 2^7918664 is an apocalyptic number.

It is an amenable number.

7918664 is an abundant number, since it is smaller than the sum of its proper divisors (8161546).

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

7918664 is a wasteful number, since it uses less digits than its factorization.

7918664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5889 (or 5872 counting only the distinct ones).

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

The square root of 7918664 is about 2814.0120824190. The cubic root of 7918664 is about 199.3198898726.

The spelling of 7918664 in words is "seven million, nine hundred eighteen thousand, six hundred sixty-four".