79961568 has 24 divisors (see below), whose sum is σ = 209899368. Its totient is φ = 26653824.

The previous prime is 79961543. The next prime is 79961569. The reversal of 79961568 is 86516997.

It is a tau number, because it is divible by the number of its divisors (24).

It is a self number, because there is not a number n which added to its sum of digits gives 79961568.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79961569) 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 3 ways as a sum of consecutive naturals, for example, 416371 + ... + 416562.

It is an arithmetic number, because the mean of its divisors is an integer number (8745807).

Almost surely, 2^79961568 is an apocalyptic number.

It is an amenable number.

79961568 is an abundant number, since it is smaller than the sum of its proper divisors (129937800).

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

79961568 is a wasteful number, since it uses less digits than its factorization.

79961568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 832946 (or 832938 counting only the distinct ones).

The product of its digits is 816480, while the sum is 51.

The square root of 79961568 is about 8942.1232377998. The cubic root of 79961568 is about 430.8179275927.

The spelling of 79961568 in words is "seventy-nine million, nine hundred sixty-one thousand, five hundred sixty-eight".