78966790 has 32 divisors (see below), whose sum is σ = 162964224. Its totient is φ = 26988000.

The previous prime is 78966743. The next prime is 78966799. The reversal of 78966790 is 9766987.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78966799) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22665 + ... + 25915.

It is an arithmetic number, because the mean of its divisors is an integer number (5092632).

Almost surely, 2^78966790 is an apocalyptic number.

78966790 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

78966790 is an abundant number, since it is smaller than the sum of its proper divisors (83997434).

78966790 is a wasteful number, since it uses less digits than its factorization.

78966790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3612.

The product of its (nonzero) digits is 1143072, while the sum is 52.

The square root of 78966790 is about 8886.3260124756. The cubic root of 78966790 is about 429.0239081950.

The spelling of 78966790 in words is "seventy-eight million, nine hundred sixty-six thousand, seven hundred ninety".