696939161 has 2 divisors, whose sum is σ = 696939162. Its totient is φ = 696939160.

The previous prime is 696939151. The next prime is 696939163. The reversal of 696939161 is 161939696.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 622203136 + 74736025 = 24944^2 + 8645^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-696939161 is a prime.

Together with 696939163, 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 (696939163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 348469580 + 348469581.

It is an arithmetic number, because the mean of its divisors is an integer number (348469581).

Almost surely, 2^696939161 is an apocalyptic number.

It is an amenable number.

696939161 is a deficient number, since it is larger than the sum of its proper divisors (1).

696939161 is an equidigital number, since it uses as much as digits as its factorization.

696939161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 472392, while the sum is 50.

The square root of 696939161 is about 26399.6053190194. The cubic root of 696939161 is about 886.6079531445.

The spelling of 696939161 in words is "six hundred ninety-six million, nine hundred thirty-nine thousand, one hundred sixty-one".