697606369 has 2 divisors, whose sum is σ = 697606370. Its totient is φ = 697606368.

The previous prime is 697606313. The next prime is 697606379. The reversal of 697606369 is 963606796.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 486775969 + 210830400 = 22063^2 + 14520^2 .

It is a cyclic number.

It is not a de Polignac number, because 697606369 - 2²⁵ = 664051937 is a prime.

It is a super-2 number, since 2×697606369² = 973309292138728322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (697606379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 348803184 + 348803185.

It is an arithmetic number, because the mean of its divisors is an integer number (348803185).

Almost surely, 2^697606369 is an apocalyptic number.

It is an amenable number.

697606369 is a deficient number, since it is larger than the sum of its proper divisors (1).

697606369 is an equidigital number, since it uses as much as digits as its factorization.

697606369 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2204496, while the sum is 52.

The square root of 697606369 is about 26412.2390001302. The cubic root of 697606369 is about 886.8907914372.

The spelling of 697606369 in words is "six hundred ninety-seven million, six hundred six thousand, three hundred sixty-nine".