7968644 has 12 divisors (see below), whose sum is σ = 13977600. Its totient is φ = 3975048.

The previous prime is 7968641. The next prime is 7968661. The reversal of 7968644 is 4468697.

It is a junction number, because it is equal to n+sod(n) for n = 7968595 and 7968604.

It is not an unprimeable number, because it can be changed into a prime (7968641) 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, 164 + ... + 3995.

It is an arithmetic number, because the mean of its divisors is an integer number (1164800).

Almost surely, 2^7968644 is an apocalyptic number.

It is an amenable number.

7968644 is a deficient number, since it is larger than the sum of its proper divisors (6008956).

7968644 is a wasteful number, since it uses less digits than its factorization.

7968644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4642 (or 4640 counting only the distinct ones).

The product of its digits is 290304, while the sum is 44.

The square root of 7968644 is about 2822.8786725610. The cubic root of 7968644 is about 199.7383578662.

The spelling of 7968644 in words is "seven million, nine hundred sixty-eight thousand, six hundred forty-four".