7974664 has 24 divisors (see below), whose sum is σ = 15351930. Its totient is φ = 3883520.

The previous prime is 7974653. The next prime is 7974677. The reversal of 7974664 is 4664797.

It can be written as a sum of positive squares in 3 ways, for example, as 3090564 + 4884100 = 1758^2 + 2210^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 7974664.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13152 + ... + 13744.

Almost surely, 2^7974664 is an apocalyptic number.

It is an amenable number.

7974664 is a deficient number, since it is larger than the sum of its proper divisors (7377266).

7974664 is a wasteful number, since it uses less digits than its factorization.

7974664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 681 (or 636 counting only the distinct ones).

The product of its digits is 254016, while the sum is 43.

The square root of 7974664 is about 2823.9447586665. The cubic root of 7974664 is about 199.7886433873.

The spelling of 7974664 in words is "seven million, nine hundred seventy-four thousand, six hundred sixty-four".