697170656 has 96 divisors (see below), whose sum is σ = 1744017408. Its totient is φ = 266872320.

The previous prime is 697170637. The next prime is 697170679. The reversal of 697170656 is 656071796.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 697170656.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 86411 + ... + 94133.

It is an arithmetic number, because the mean of its divisors is an integer number (18166848).

Almost surely, 2^697170656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 697170656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (872008704).

697170656 is an abundant number, since it is smaller than the sum of its proper divisors (1046846752).

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

697170656 is a wasteful number, since it uses less digits than its factorization.

697170656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7784 (or 7776 counting only the distinct ones).

The product of its (nonzero) digits is 476280, while the sum is 47.

The square root of 697170656 is about 26403.9893955440. The cubic root of 697170656 is about 886.7061073781.

The spelling of 697170656 in words is "six hundred ninety-seven million, one hundred seventy thousand, six hundred fifty-six".