79578679 has 2 divisors, whose sum is σ = 79578680. Its totient is φ = 79578678.

The previous prime is 79578671. The next prime is 79578691. The reversal of 79578679 is 97687597.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 79578679 - 2³ = 79578671 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79578671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39789339 + 39789340.

It is an arithmetic number, because the mean of its divisors is an integer number (39789340).

Almost surely, 2^79578679 is an apocalyptic number.

79578679 is a deficient number, since it is larger than the sum of its proper divisors (1).

79578679 is an equidigital number, since it uses as much as digits as its factorization.

79578679 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6667920, while the sum is 58.

The square root of 79578679 is about 8920.6882582007. The cubic root of 79578679 is about 430.1291823873.

The spelling of 79578679 in words is "seventy-nine million, five hundred seventy-eight thousand, six hundred seventy-nine".