679867577 has 2 divisors, whose sum is σ = 679867578. Its totient is φ = 679867576.

The previous prime is 679867493. The next prime is 679867579. The reversal of 679867577 is 775768976.

679867577 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 608312896 + 71554681 = 24664^2 + 8459^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-679867577 is a prime.

Together with 679867579, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (679867579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 339933788 + 339933789.

It is an arithmetic number, because the mean of its divisors is an integer number (339933789).

Almost surely, 2^679867577 is an apocalyptic number.

It is an amenable number.

679867577 is a deficient number, since it is larger than the sum of its proper divisors (1).

679867577 is an equidigital number, since it uses as much as digits as its factorization.

679867577 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31116960, while the sum is 62.

The square root of 679867577 is about 26074.2704020649. The cubic root of 679867577 is about 879.3088482380.

The spelling of 679867577 in words is "six hundred seventy-nine million, eight hundred sixty-seven thousand, five hundred seventy-seven".