679195663 has 2 divisors, whose sum is σ = 679195664. Its totient is φ = 679195662.

The previous prime is 679195607. The next prime is 679195711. The reversal of 679195663 is 366591976.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-679195663 is a prime.

It is a super-2 number, since 2×679195663² = 922613497276019138, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 679195663.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (679195763) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 339597831 + 339597832.

It is an arithmetic number, because the mean of its divisors is an integer number (339597832).

Almost surely, 2^679195663 is an apocalyptic number.

679195663 is a deficient number, since it is larger than the sum of its proper divisors (1).

679195663 is an equidigital number, since it uses as much as digits as its factorization.

679195663 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1837080, while the sum is 52.

The square root of 679195663 is about 26061.3825995476. The cubic root of 679195663 is about 879.0190787356.

The spelling of 679195663 in words is "six hundred seventy-nine million, one hundred ninety-five thousand, six hundred sixty-three".