697657328 has 20 divisors (see below), whose sum is σ = 1352340528. Its totient is φ = 348666240.

The previous prime is 697657313. The next prime is 697657343. The reversal of 697657328 is 823756796.

It is an interprime number because it is at equal distance from previous prime (697657313) and next prime (697657343).

It is a self number, because there is not a number n which added to its sum of digits gives 697657328.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30125 + ... + 47987.

Almost surely, 2^697657328 is an apocalyptic number.

It is an amenable number.

697657328 is a deficient number, since it is larger than the sum of its proper divisors (654683200).

697657328 is a wasteful number, since it uses less digits than its factorization.

697657328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20312 (or 20306 counting only the distinct ones).

The product of its digits is 3810240, while the sum is 53.

The square root of 697657328 is about 26413.2036678628. The cubic root of 697657328 is about 886.9123862169.

The spelling of 697657328 in words is "six hundred ninety-seven million, six hundred fifty-seven thousand, three hundred twenty-eight".