697162965520 has 80 divisors (see below), whose sum is σ = 1912218467328. Its totient is φ = 231316738560.

The previous prime is 697162965479. The next prime is 697162965523. The reversal of 697162965520 is 25569261796.

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (697162965523) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 20062219 + ... + 20096938.

Almost surely, 2^697162965520 is an apocalyptic number.

It is an amenable number.

697162965520 is an abundant number, since it is smaller than the sum of its proper divisors (1215055501808).

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

697162965520 is a wasteful number, since it uses less digits than its factorization.

697162965520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40159208 (or 40159202 counting only the distinct ones).

The product of its (nonzero) digits is 12247200, while the sum is 58.

The spelling of 697162965520 in words is "six hundred ninety-seven billion, one hundred sixty-two million, nine hundred sixty-five thousand, five hundred twenty".