707215961 has 2 divisors, whose sum is σ = 707215962. Its totient is φ = 707215960.

The previous prime is 707215913. The next prime is 707215981. The reversal of 707215961 is 169512707.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 482065936 + 225150025 = 21956^2 + 15005^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-707215961 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (707215981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 353607980 + 353607981.

It is an arithmetic number, because the mean of its divisors is an integer number (353607981).

Almost surely, 2^707215961 is an apocalyptic number.

It is an amenable number.

707215961 is a deficient number, since it is larger than the sum of its proper divisors (1).

707215961 is an equidigital number, since it uses as much as digits as its factorization.

707215961 is an odious number, because the sum of its binary digits is odd.

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

The square root of 707215961 is about 26593.5323152078. The cubic root of 707215961 is about 890.9445684290.

The spelling of 707215961 in words is "seven hundred seven million, two hundred fifteen thousand, nine hundred sixty-one".