79758656 has 56 divisors (see below), whose sum is σ = 168432480. Its totient is φ = 37366272.

The previous prime is 79758649. The next prime is 79758661. The reversal of 79758656 is 65685797.

It is a happy number.

It is a super-2 number, since 2×79758656² = 12722886413852672, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 79758598 and 79758607.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 129806 + ... + 130418.

Almost surely, 2^79758656 is an apocalyptic number.

79758656 is a gapful number since it is divisible by the number (76) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 79758656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84216240).

79758656 is an abundant number, since it is smaller than the sum of its proper divisors (88673824).

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

79758656 is a wasteful number, since it uses less digits than its factorization.

79758656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 751 (or 741 counting only the distinct ones).

The product of its digits is 3175200, while the sum is 53.

The square root of 79758656 is about 8930.7701795534. The cubic root of 79758656 is about 430.4532016434.

The spelling of 79758656 in words is "seventy-nine million, seven hundred fifty-eight thousand, six hundred fifty-six".