679985113 has 2 divisors, whose sum is σ = 679985114. Its totient is φ = 679985112.

The previous prime is 679985063. The next prime is 679985171. The reversal of 679985113 is 311589976.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 365880384 + 314104729 = 19128^2 + 17723^2 .

It is a cyclic number.

It is not a de Polignac number, because 679985113 - 2¹⁷ = 679854041 is a prime.

It is not a weakly prime, because it can be changed into another prime (679983113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 339992556 + 339992557.

It is an arithmetic number, because the mean of its divisors is an integer number (339992557).

Almost surely, 2^679985113 is an apocalyptic number.

It is an amenable number.

679985113 is a deficient number, since it is larger than the sum of its proper divisors (1).

679985113 is an equidigital number, since it uses as much as digits as its factorization.

679985113 is an evil number, because the sum of its binary digits is even.

The product of its digits is 408240, while the sum is 49.

The square root of 679985113 is about 26076.5241740536. The cubic root of 679985113 is about 879.3595171688.

The spelling of 679985113 in words is "six hundred seventy-nine million, nine hundred eighty-five thousand, one hundred thirteen".