697270656 has 32 divisors (see below), whose sum is σ = 1852126200. Its totient is φ = 232423424.

The previous prime is 697270643. The next prime is 697270697. The reversal of 697270656 is 656072796.

It is a tau number, because it is divible by the number of its divisors (32).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

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, 907521 + ... + 908288.

Almost surely, 2^697270656 is an apocalyptic number.

It is an amenable number.

697270656 is an abundant number, since it is smaller than the sum of its proper divisors (1154855544).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

697270656 is a wasteful number, since it uses less digits than its factorization.

697270656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1815826 (or 1815814 counting only the distinct ones).

The product of its (nonzero) digits is 952560, while the sum is 48.

The square root of 697270656 is about 26405.8829808814. The cubic root of 697270656 is about 886.7485008106.

The spelling of 697270656 in words is "six hundred ninety-seven million, two hundred seventy thousand, six hundred fifty-six".