79578612 has 144 divisors (see below), whose sum is σ = 228300800. Its totient is φ = 24144480.

The previous prime is 79578571. The next prime is 79578613. The reversal of 79578612 is 21687597.

79578612 is a `hidden beast` number, since 79 + 578 + 6 + 1 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79578613) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 572439 + ... + 572577.

Almost surely, 2^79578612 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 79578612, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (114150400).

79578612 is an abundant number, since it is smaller than the sum of its proper divisors (148722188).

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

79578612 is a wasteful number, since it uses less digits than its factorization.

79578612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208 (or 194 counting only the distinct ones).

The product of its digits is 211680, while the sum is 45.

The square root of 79578612 is about 8920.6845028843. The cubic root of 79578612 is about 430.1290616737.

The spelling of 79578612 in words is "seventy-nine million, five hundred seventy-eight thousand, six hundred twelve".