697664358 has 24 divisors (see below), whose sum is σ = 1532315928. Its totient is φ = 229368672.

The previous prime is 697664353. The next prime is 697664399. The reversal of 697664358 is 853466796.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (697664353) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 264160 + ... + 266787.

It is an arithmetic number, because the mean of its divisors is an integer number (63846497).

Almost surely, 2^697664358 is an apocalyptic number.

697664358 is an abundant number, since it is smaller than the sum of its proper divisors (834651570).

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

697664358 is a wasteful number, since it uses less digits than its factorization.

697664358 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 531028 (or 531025 counting only the distinct ones).

The product of its digits is 6531840, while the sum is 54.

The square root of 697664358 is about 26413.3367449098. The cubic root of 697664358 is about 886.9153652214.

The spelling of 697664358 in words is "six hundred ninety-seven million, six hundred sixty-four thousand, three hundred fifty-eight".