697956049 has 12 divisors (see below), whose sum is σ = 833853684. Its totient is φ = 582077664.

The previous prime is 697956043. The next prime is 697956071. The reversal of 697956049 is 940659796.

It can be written as a sum of positive squares in 2 ways, for example, as 501760000 + 196196049 = 22400^2 + 14007^2 .

It is not a de Polignac number, because 697956049 - 2²¹ = 695858897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (697956043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 190674 + ... + 194299.

It is an arithmetic number, because the mean of its divisors is an integer number (69487807).

Almost surely, 2^697956049 is an apocalyptic number.

It is an amenable number.

697956049 is a deficient number, since it is larger than the sum of its proper divisors (135897635).

697956049 is a wasteful number, since it uses less digits than its factorization.

697956049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385024 (or 385017 counting only the distinct ones).

The product of its (nonzero) digits is 3674160, while the sum is 55.

The square root of 697956049 is about 26418.8578292098. The cubic root of 697956049 is about 887.0389533913.

The spelling of 697956049 in words is "six hundred ninety-seven million, nine hundred fifty-six thousand, forty-nine".