696585257 has 2 divisors, whose sum is σ = 696585258. Its totient is φ = 696585256.

The previous prime is 696585247. The next prime is 696585259. The reversal of 696585257 is 752585696.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 408807961 + 287777296 = 20219^2 + 16964^2 .

It is a cyclic number.

It is not a de Polignac number, because 696585257 - 2⁶ = 696585193 is a prime.

Together with 696585259, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 696585199 and 696585208.

It is not a weakly prime, because it can be changed into another prime (696585259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 348292628 + 348292629.

It is an arithmetic number, because the mean of its divisors is an integer number (348292629).

Almost surely, 2^696585257 is an apocalyptic number.

It is an amenable number.

696585257 is a deficient number, since it is larger than the sum of its proper divisors (1).

696585257 is an equidigital number, since it uses as much as digits as its factorization.

696585257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4536000, while the sum is 53.

The square root of 696585257 is about 26392.9016404032. The cubic root of 696585257 is about 886.4578552857.

The spelling of 696585257 in words is "six hundred ninety-six million, five hundred eighty-five thousand, two hundred fifty-seven".