697414661 has 2 divisors, whose sum is σ = 697414662. Its totient is φ = 697414660.

The previous prime is 697414631. The next prime is 697414673. The reversal of 697414661 is 166414796.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 686754436 + 10660225 = 26206^2 + 3265^2 .

It is a cyclic number.

It is not a de Polignac number, because 697414661 - 2¹⁴ = 697398277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (697414621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 348707330 + 348707331.

It is an arithmetic number, because the mean of its divisors is an integer number (348707331).

Almost surely, 2^697414661 is an apocalyptic number.

It is an amenable number.

697414661 is a deficient number, since it is larger than the sum of its proper divisors (1).

697414661 is an equidigital number, since it uses as much as digits as its factorization.

697414661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 217728, while the sum is 44.

The square root of 697414661 is about 26408.6095999013. The cubic root of 697414661 is about 886.8095423525.

The spelling of 697414661 in words is "six hundred ninety-seven million, four hundred fourteen thousand, six hundred sixty-one".