679684253 has 2 divisors, whose sum is σ = 679684254. Its totient is φ = 679684252.

The previous prime is 679684241. The next prime is 679684267. The reversal of 679684253 is 352486976.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 678758809 + 925444 = 26053^2 + 962^2 .

It is a cyclic number.

It is not a de Polignac number, because 679684253 - 2⁴ = 679684237 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (679684553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 339842126 + 339842127.

It is an arithmetic number, because the mean of its divisors is an integer number (339842127).

Almost surely, 2^679684253 is an apocalyptic number.

It is an amenable number.

679684253 is a deficient number, since it is larger than the sum of its proper divisors (1).

679684253 is an equidigital number, since it uses as much as digits as its factorization.

679684253 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2177280, while the sum is 50.

The square root of 679684253 is about 26070.7547454998. The cubic root of 679684253 is about 879.2298069111.

The spelling of 679684253 in words is "six hundred seventy-nine million, six hundred eighty-four thousand, two hundred fifty-three".