697665080 has 32 divisors (see below), whose sum is σ = 1793996640. Its totient is φ = 239199360.

The previous prime is 697665077. The next prime is 697665103. The reversal of 697665080 is 80566796.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1245551 + ... + 1246110.

It is an arithmetic number, because the mean of its divisors is an integer number (56062395).

Almost surely, 2^697665080 is an apocalyptic number.

It is an amenable number.

697665080 is an abundant number, since it is smaller than the sum of its proper divisors (1096331560).

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

697665080 is a wasteful number, since it uses less digits than its factorization.

697665080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2491679 (or 2491675 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 47.

The square root of 697665080 is about 26413.3504122442. The cubic root of 697665080 is about 886.9156711721.

The spelling of 697665080 in words is "six hundred ninety-seven million, six hundred sixty-five thousand, eighty".