79945656 has 96 divisors (see below), whose sum is σ = 234516240. Its totient is φ = 22643712.

The previous prime is 79945651. The next prime is 79945661. The reversal of 79945656 is 65654997.

It is an interprime number because it is at equal distance from previous prime (79945651) and next prime (79945661).

It is a junction number, because it is equal to n+sod(n) for n = 79945599 and 79945608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79945651) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 184416 + ... + 184848.

Almost surely, 2^79945656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 79945656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (117258120).

79945656 is an abundant number, since it is smaller than the sum of its proper divisors (154570584).

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

79945656 is a wasteful number, since it uses less digits than its factorization.

79945656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 613 (or 602 counting only the distinct ones).

The product of its digits is 2041200, while the sum is 51.

The square root of 79945656 is about 8941.2334719545. The cubic root of 79945656 is about 430.7893487399.

It can be divided in two parts, 79945 and 656, that added together give a triangular number (80601 = T₄₀₁).

The spelling of 79945656 in words is "seventy-nine million, nine hundred forty-five thousand, six hundred fifty-six".