696352661 has 2 divisors, whose sum is σ = 696352662. Its totient is φ = 696352660.

The previous prime is 696352649. The next prime is 696352663. The reversal of 696352661 is 166253696.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 674440900 + 21911761 = 25970^2 + 4681^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-696352661 is a prime.

Together with 696352663, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (696352663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 348176330 + 348176331.

It is an arithmetic number, because the mean of its divisors is an integer number (348176331).

Almost surely, 2^696352661 is an apocalyptic number.

It is an amenable number.

696352661 is a deficient number, since it is larger than the sum of its proper divisors (1).

696352661 is an equidigital number, since it uses as much as digits as its factorization.

696352661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 349920, while the sum is 44.

The square root of 696352661 is about 26388.4948604501. The cubic root of 696352661 is about 886.3591789200.

The spelling of 696352661 in words is "six hundred ninety-six million, three hundred fifty-two thousand, six hundred sixty-one".