697431533 has 2 divisors, whose sum is σ = 697431534. Its totient is φ = 697431532.

The previous prime is 697431529. The next prime is 697431541. The reversal of 697431533 is 335134796.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 678185764 + 19245769 = 26042^2 + 4387^2 .

It is a cyclic number.

It is not a de Polignac number, because 697431533 - 2² = 697431529 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (697431433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 348715766 + 348715767.

It is an arithmetic number, because the mean of its divisors is an integer number (348715767).

Almost surely, 2^697431533 is an apocalyptic number.

It is an amenable number.

697431533 is a deficient number, since it is larger than the sum of its proper divisors (1).

697431533 is an equidigital number, since it uses as much as digits as its factorization.

697431533 is an evil number, because the sum of its binary digits is even.

The product of its digits is 204120, while the sum is 41.

The square root of 697431533 is about 26408.9290392473. The cubic root of 697431533 is about 886.8166935883.

The spelling of 697431533 in words is "six hundred ninety-seven million, four hundred thirty-one thousand, five hundred thirty-three".