7966656 has 42 divisors (see below), whose sum is σ = 22836632. Its totient is φ = 2655360.

The previous prime is 7966633. The next prime is 7966663. The reversal of 7966656 is 6566697.

It is a zygodrome in base 2.

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, 6340 + ... + 7491.

Almost surely, 2^7966656 is an apocalyptic number.

It is an amenable number.

7966656 is an abundant number, since it is smaller than the sum of its proper divisors (14869976).

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

7966656 is a wasteful number, since it uses less digits than its factorization.

7966656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13849 (or 13836 counting only the distinct ones).

The product of its digits is 408240, while the sum is 45.

The square root of 7966656 is about 2822.5265277761. The cubic root of 7966656 is about 199.7217463875.

The spelling of 7966656 in words is "seven million, nine hundred sixty-six thousand, six hundred fifty-six".