697847956 has 12 divisors (see below), whose sum is σ = 1315175092. Its totient is φ = 322083648.

The previous prime is 697847951. The next prime is 697847987. The reversal of 697847956 is 659748796.

It can be written as a sum of positive squares in 2 ways, for example, as 330512400 + 367335556 = 18180^2 + 19166^2 .

It is a junction number, because it is equal to n+sod(n) for n = 697847894 and 697847903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (697847951) 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 in 3 ways as a sum of consecutive naturals, for example, 6710025 + ... + 6710128.

Almost surely, 2^697847956 is an apocalyptic number.

It is an amenable number.

697847956 is a deficient number, since it is larger than the sum of its proper divisors (617327136).

697847956 is a wasteful number, since it uses less digits than its factorization.

697847956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13420170 (or 13420168 counting only the distinct ones).

The product of its digits is 22861440, while the sum is 61.

The square root of 697847956 is about 26416.8119953941. The cubic root of 697847956 is about 886.9931588880.

The spelling of 697847956 in words is "six hundred ninety-seven million, eight hundred forty-seven thousand, nine hundred fifty-six".