7648664 has 8 divisors (see below), whose sum is σ = 14341260. Its totient is φ = 3824328.

The previous prime is 7648649. The next prime is 7648687. The reversal of 7648664 is 4668467.

It is a tau number, because it is divible by the number of its divisors (8).

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 478034 + ... + 478049.

Almost surely, 2^7648664 is an apocalyptic number.

It is an amenable number.

7648664 is a deficient number, since it is larger than the sum of its proper divisors (6692596).

7648664 is a wasteful number, since it uses less digits than its factorization.

7648664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 956089 (or 956085 counting only the distinct ones).

The product of its digits is 193536, while the sum is 41.

The square root of 7648664 is about 2765.6218107326. The cubic root of 7648664 is about 197.0282625843.

The spelling of 7648664 in words is "seven million, six hundred forty-eight thousand, six hundred sixty-four".