79663579 has 2 divisors, whose sum is σ = 79663580. Its totient is φ = 79663578.

The previous prime is 79663501. The next prime is 79663601. The reversal of 79663579 is 97536697.

It is a strong prime.

It is an emirp because it is prime and its reverse (97536697) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 79663579 - 2²³ = 71274971 is a prime.

It is not a weakly prime, because it can be changed into another prime (79663279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39831789 + 39831790.

It is an arithmetic number, because the mean of its divisors is an integer number (39831790).

Almost surely, 2^79663579 is an apocalyptic number.

79663579 is a deficient number, since it is larger than the sum of its proper divisors (1).

79663579 is an equidigital number, since it uses as much as digits as its factorization.

79663579 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2143260, while the sum is 52.

The square root of 79663579 is about 8925.4455911176. The cubic root of 79663579 is about 430.2820918060.

The spelling of 79663579 in words is "seventy-nine million, six hundred sixty-three thousand, five hundred seventy-nine".