697513 has 2 divisors, whose sum is σ = 697514. Its totient is φ = 697512.

The previous prime is 697511. The next prime is 697519. The reversal of 697513 is 315796.

697513 is nontrivially palindromic in base 7.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 501264 + 196249 = 708^2 + 443^2 .

It is a cyclic number.

It is not a de Polignac number, because 697513 - 2¹ = 697511 is a prime.

Together with 697511, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (697511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 348756 + 348757.

It is an arithmetic number, because the mean of its divisors is an integer number (348757).

2⁶⁹⁷⁵¹³ is an apocalyptic number.

It is an amenable number.

697513 is a deficient number, since it is larger than the sum of its proper divisors (1).

697513 is an equidigital number, since it uses as much as digits as its factorization.

697513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5670, while the sum is 31.

The square root of 697513 is about 835.1724372847. The cubic root of 697513 is about 88.6851221939.

The spelling of 697513 in words is "six hundred ninety-seven thousand, five hundred thirteen".