79315567 has 2 divisors, whose sum is σ = 79315568. Its totient is φ = 79315566.

The previous prime is 79315559. The next prime is 79315571. The reversal of 79315567 is 76551397.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 79315567 - 2³ = 79315559 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79315517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39657783 + 39657784.

It is an arithmetic number, because the mean of its divisors is an integer number (39657784).

Almost surely, 2^79315567 is an apocalyptic number.

79315567 is a deficient number, since it is larger than the sum of its proper divisors (1).

79315567 is an equidigital number, since it uses as much as digits as its factorization.

79315567 is an evil number, because the sum of its binary digits is even.

The product of its digits is 198450, while the sum is 43.

The square root of 79315567 is about 8905.9287556099. The cubic root of 79315567 is about 429.6546117779.

The spelling of 79315567 in words is "seventy-nine million, three hundred fifteen thousand, five hundred sixty-seven".