79620678 has 64 divisors (see below), whose sum is σ = 189043200. Its totient is φ = 24766560.

The previous prime is 79620577. The next prime is 79620691. The reversal of 79620678 is 87602697.

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 in 31 ways as a sum of consecutive naturals, for example, 72300 + ... + 73392.

It is an arithmetic number, because the mean of its divisors is an integer number (2953800).

Almost surely, 2^79620678 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 79620678, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94521600).

79620678 is an abundant number, since it is smaller than the sum of its proper divisors (109422522).

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

79620678 is a wasteful number, since it uses less digits than its factorization.

79620678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1194 (or 1188 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 45.

The square root of 79620678 is about 8923.0419700907. The cubic root of 79620678 is about 430.2048384074.

The spelling of 79620678 in words is "seventy-nine million, six hundred twenty thousand, six hundred seventy-eight".