78990606 has 32 divisors (see below), whose sum is σ = 181591200. Its totient is φ = 25421760.

The previous prime is 78990601. The next prime is 78990623. The reversal of 78990606 is 60609987.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78990601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23655 + ... + 26786.

It is an arithmetic number, because the mean of its divisors is an integer number (5674725).

Almost surely, 2^78990606 is an apocalyptic number.

78990606 is an abundant number, since it is smaller than the sum of its proper divisors (102600594).

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

78990606 is a wasteful number, since it uses less digits than its factorization.

78990606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50481 (or 50475 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 45.

The square root of 78990606 is about 8887.6659478178. The cubic root of 78990606 is about 429.0670343681.

The spelling of 78990606 in words is "seventy-eight million, nine hundred ninety thousand, six hundred six".