79120061 has 2 divisors, whose sum is σ = 79120062. Its totient is φ = 79120060.

The previous prime is 79120039. The next prime is 79120073. The reversal of 79120061 is 16002197.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 60543961 + 18576100 = 7781^2 + 4310^2 .

It is a cyclic number.

It is not a de Polignac number, because 79120061 - 2²² = 74925757 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 79120061.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79120861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39560030 + 39560031.

It is an arithmetic number, because the mean of its divisors is an integer number (39560031).

Almost surely, 2^79120061 is an apocalyptic number.

It is an amenable number.

79120061 is a deficient number, since it is larger than the sum of its proper divisors (1).

79120061 is an equidigital number, since it uses as much as digits as its factorization.

79120061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 756, while the sum is 26.

The square root of 79120061 is about 8894.9458120890. The cubic root of 79120061 is about 429.3013008622.

The spelling of 79120061 in words is "seventy-nine million, one hundred twenty thousand, sixty-one".