79646816 has 12 divisors (see below), whose sum is σ = 156804732. Its totient is φ = 39823392.

The previous prime is 79646783. The next prime is 79646837. The reversal of 79646816 is 61864697.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1244450 + ... + 1244513.

It is an arithmetic number, because the mean of its divisors is an integer number (13067061).

Almost surely, 2^79646816 is an apocalyptic number.

It is an amenable number.

79646816 is a deficient number, since it is larger than the sum of its proper divisors (77157916).

79646816 is a wasteful number, since it uses less digits than its factorization.

79646816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2488973 (or 2488965 counting only the distinct ones).

The product of its digits is 435456, while the sum is 47.

The square root of 79646816 is about 8924.5064849548. The cubic root of 79646816 is about 430.2519093614.

The spelling of 79646816 in words is "seventy-nine million, six hundred forty-six thousand, eight hundred sixteen".