697736660 has 24 divisors (see below), whose sum is σ = 1487119200. Its totient is φ = 274928544.

The previous prime is 697736629. The next prime is 697736687. The reversal of 697736660 is 66637796.

It is a junction number, because it is equal to n+sod(n) for n = 697736599 and 697736608.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 259010 + ... + 261689.

It is an arithmetic number, because the mean of its divisors is an integer number (61963300).

Almost surely, 2^697736660 is an apocalyptic number.

It is an amenable number.

697736660 is an abundant number, since it is smaller than the sum of its proper divisors (789382540).

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

697736660 is a wasteful number, since it uses less digits than its factorization.

697736660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 520775 (or 520773 counting only the distinct ones).

The product of its (nonzero) digits is 1714608, while the sum is 50.

The square root of 697736660 is about 26414.7053740904. The cubic root of 697736660 is about 886.9460024655.

The spelling of 697736660 in words is "six hundred ninety-seven million, seven hundred thirty-six thousand, six hundred sixty".