697564085 has 8 divisors (see below), whose sum is σ = 839323320. Its totient is φ = 556553664.

The previous prime is 697564073. The next prime is 697564093. The reversal of 697564085 is 580465796.

It can be written as a sum of positive squares in 4 ways, for example, as 9498724 + 688065361 = 3082^2 + 26231^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-697564085 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 185150 + ... + 188879.

It is an arithmetic number, because the mean of its divisors is an integer number (104915415).

Almost surely, 2^697564085 is an apocalyptic number.

It is an amenable number.

697564085 is a deficient number, since it is larger than the sum of its proper divisors (141759235).

697564085 is a wasteful number, since it uses less digits than its factorization.

697564085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374407.

The product of its (nonzero) digits is 1814400, while the sum is 50.

The square root of 697564085 is about 26411.4385257600. The cubic root of 697564085 is about 886.8728720443.

The spelling of 697564085 in words is "six hundred ninety-seven million, five hundred sixty-four thousand, eighty-five".