7964644 has 12 divisors (see below), whose sum is σ = 14387968. Its totient is φ = 3853800.

The previous prime is 7964633. The next prime is 7964651. The reversal of 7964644 is 4464697.

It is a junction number, because it is equal to n+sod(n) for n = 7964597 and 7964606.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31992 + ... + 32239.

Almost surely, 2^7964644 is an apocalyptic number.

It is an amenable number.

7964644 is a deficient number, since it is larger than the sum of its proper divisors (6423324).

7964644 is a wasteful number, since it uses less digits than its factorization.

7964644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64266 (or 64264 counting only the distinct ones).

The product of its digits is 145152, while the sum is 40.

The square root of 7964644 is about 2822.1700870075. The cubic root of 7964644 is about 199.7049315538.

The spelling of 7964644 in words is "seven million, nine hundred sixty-four thousand, six hundred forty-four".