679413961 has 2 divisors, whose sum is σ = 679413962. Its totient is φ = 679413960.

The previous prime is 679413937. The next prime is 679414007. The reversal of 679413961 is 169314976.

It is a happy number.

It is an a-pointer prime, because the next prime (679414007) can be obtained adding 679413961 to its sum of digits (46).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 600985225 + 78428736 = 24515^2 + 8856^2 .

It is a cyclic number.

It is not a de Polignac number, because 679413961 - 2²³ = 671025353 is a prime.

It is not a weakly prime, because it can be changed into another prime (679413061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 339706980 + 339706981.

It is an arithmetic number, because the mean of its divisors is an integer number (339706981).

Almost surely, 2^679413961 is an apocalyptic number.

It is an amenable number.

679413961 is a deficient number, since it is larger than the sum of its proper divisors (1).

679413961 is an equidigital number, since it uses as much as digits as its factorization.

679413961 is an evil number, because the sum of its binary digits is even.

The product of its digits is 244944, while the sum is 46.

The square root of 679413961 is about 26065.5704138620. The cubic root of 679413961 is about 879.1132428393.

The spelling of 679413961 in words is "six hundred seventy-nine million, four hundred thirteen thousand, nine hundred sixty-one".