679122799 has 2 divisors, whose sum is σ = 679122800. Its totient is φ = 679122798.

The previous prime is 679122791. The next prime is 679122809. The reversal of 679122799 is 997221976.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 679122799 - 2³ = 679122791 is a prime.

It is a super-2 number, since 2×679122799² = 922415552243188802, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (679122791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 339561399 + 339561400.

It is an arithmetic number, because the mean of its divisors is an integer number (339561400).

Almost surely, 2^679122799 is an apocalyptic number.

679122799 is a deficient number, since it is larger than the sum of its proper divisors (1).

679122799 is an equidigital number, since it uses as much as digits as its factorization.

679122799 is an evil number, because the sum of its binary digits is even.

The product of its digits is 857304, while the sum is 52.

The square root of 679122799 is about 26059.9846316148. The cubic root of 679122799 is about 878.9876439370.

The spelling of 679122799 in words is "six hundred seventy-nine million, one hundred twenty-two thousand, seven hundred ninety-nine".