7403664 has 20 divisors (see below), whose sum is σ = 19126256. Its totient is φ = 2467872.

The previous prime is 7403639. The next prime is 7403707. The reversal of 7403664 is 4663047.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

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, 77074 + ... + 77169.

Almost surely, 2^7403664 is an apocalyptic number.

It is an amenable number.

7403664 is an abundant number, since it is smaller than the sum of its proper divisors (11722592).

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

7403664 is a wasteful number, since it uses less digits than its factorization.

7403664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154254 (or 154248 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 30.

The square root of 7403664 is about 2720.9674749986. The cubic root of 7403664 is about 194.9016729788.

The spelling of 7403664 in words is "seven million, four hundred three thousand, six hundred sixty-four".