679308173 has 2 divisors, whose sum is σ = 679308174. Its totient is φ = 679308172.

The previous prime is 679308167. The next prime is 679308181. The reversal of 679308173 is 371803976.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 607770409 + 71537764 = 24653^2 + 8458^2 .

It is a cyclic number.

It is not a de Polignac number, because 679308173 - 2⁸ = 679307917 is a prime.

It is a super-2 number, since 2×679308173² = 922919187809195858, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (679308163) 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, 339654086 + 339654087.

It is an arithmetic number, because the mean of its divisors is an integer number (339654087).

Almost surely, 2^679308173 is an apocalyptic number.

It is an amenable number.

679308173 is a deficient number, since it is larger than the sum of its proper divisors (1).

679308173 is an equidigital number, since it uses as much as digits as its factorization.

679308173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 190512, while the sum is 44.

The square root of 679308173 is about 26063.5410679363. The cubic root of 679308173 is about 879.0676130935.

The spelling of 679308173 in words is "six hundred seventy-nine million, three hundred eight thousand, one hundred seventy-three".