79722066 has 16 divisors (see below), whose sum is σ = 161690688. Its totient is φ = 26199600.

The previous prime is 79722047. The next prime is 79722079. The reversal of 79722066 is 66022797.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 93145 + ... + 93996.

It is an arithmetic number, because the mean of its divisors is an integer number (10105668).

Almost surely, 2^79722066 is an apocalyptic number.

79722066 is an abundant number, since it is smaller than the sum of its proper divisors (81968622).

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

79722066 is a wasteful number, since it uses less digits than its factorization.

79722066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187217.

The product of its (nonzero) digits is 63504, while the sum is 39.

The square root of 79722066 is about 8928.7214090260. The cubic root of 79722066 is about 430.3873668171.

The spelling of 79722066 in words is "seventy-nine million, seven hundred twenty-two thousand, sixty-six".