79790646 has 32 divisors (see below), whose sum is σ = 172902240. Its totient is φ = 24546912.

The previous prime is 79790609. The next prime is 79790663. The reversal of 79790646 is 64609797.

It is a junction number, because it is equal to n+sod(n) for n = 79790595 and 79790604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10156 + ... + 16208.

It is an arithmetic number, because the mean of its divisors is an integer number (5403195).

Almost surely, 2^79790646 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 79790646, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86451120).

79790646 is an abundant number, since it is smaller than the sum of its proper divisors (93111594).

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

79790646 is a wasteful number, since it uses less digits than its factorization.

79790646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6097 (or 6071 counting only the distinct ones).

The product of its (nonzero) digits is 571536, while the sum is 48.

The square root of 79790646 is about 8932.5609989521. The cubic root of 79790646 is about 430.5107433908.

The spelling of 79790646 in words is "seventy-nine million, seven hundred ninety thousand, six hundred forty-six".