79508761 has 2 divisors, whose sum is σ = 79508762. Its totient is φ = 79508760.

The previous prime is 79508743. The next prime is 79508783. The reversal of 79508761 is 16780597.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 66113161 + 13395600 = 8131^2 + 3660^2 .

It is an emirp because it is prime and its reverse (16780597) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 79508761 - 2⁵ = 79508729 is a prime.

It is not a weakly prime, because it can be changed into another prime (79508791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39754380 + 39754381.

It is an arithmetic number, because the mean of its divisors is an integer number (39754381).

Almost surely, 2^79508761 is an apocalyptic number.

It is an amenable number.

79508761 is a deficient number, since it is larger than the sum of its proper divisors (1).

79508761 is an equidigital number, since it uses as much as digits as its factorization.

79508761 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 105840, while the sum is 43.

The square root of 79508761 is about 8916.7685290132. The cubic root of 79508761 is about 430.0031746656.

The spelling of 79508761 in words is "seventy-nine million, five hundred eight thousand, seven hundred sixty-one".