679201517 has 2 divisors, whose sum is σ = 679201518. Its totient is φ = 679201516.

The previous prime is 679201513. The next prime is 679201541. The reversal of 679201517 is 715102976.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 532040356 + 147161161 = 23066^2 + 12131^2 .

It is a cyclic number.

It is not a de Polignac number, because 679201517 - 2² = 679201513 is a prime.

It is a super-2 number, since 2×679201517² = 922629401390202578, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (679201513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 339600758 + 339600759.

It is an arithmetic number, because the mean of its divisors is an integer number (339600759).

Almost surely, 2^679201517 is an apocalyptic number.

It is an amenable number.

679201517 is a deficient number, since it is larger than the sum of its proper divisors (1).

679201517 is an equidigital number, since it uses as much as digits as its factorization.

679201517 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26460, while the sum is 38.

The square root of 679201517 is about 26061.4949110752. The cubic root of 679201517 is about 879.0216041556.

The spelling of 679201517 in words is "six hundred seventy-nine million, two hundred one thousand, five hundred seventeen".