7966644 has 24 divisors (see below), whose sum is σ = 21244608. Its totient is φ = 2276160.

The previous prime is 7966633. The next prime is 7966663. The reversal of 7966644 is 4466697.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 7966596 and 7966605.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47337 + ... + 47504.

It is an arithmetic number, because the mean of its divisors is an integer number (885192).

Almost surely, 2^7966644 is an apocalyptic number.

It is an amenable number.

7966644 is an abundant number, since it is smaller than the sum of its proper divisors (13277964).

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

7966644 is a wasteful number, since it uses less digits than its factorization.

7966644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94855 (or 94853 counting only the distinct ones).

The product of its digits is 217728, while the sum is 42.

The square root of 7966644 is about 2822.5244020203. The cubic root of 7966644 is about 199.7216461086.

The spelling of 7966644 in words is "seven million, nine hundred sixty-six thousand, six hundred forty-four".