691717355596 has 12 divisors (see below), whose sum is σ = 1210520750040. Its totient is φ = 345854284160.

The previous prime is 691717355579. The next prime is 691717355617. The reversal of 691717355596 is 695553717196.

It is a super-2 number, since 2×691717355596² (a number of 24 digits) contains 22 as substring.

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, 730486 + ... + 1384573.

It is an arithmetic number, because the mean of its divisors is an integer number (100876729170).

Almost surely, 2^691717355596 is an apocalyptic number.

It is an amenable number.

691717355596 is a deficient number, since it is larger than the sum of its proper divisors (518803394444).

691717355596 is a wasteful number, since it uses less digits than its factorization.

691717355596 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2196824 (or 2196822 counting only the distinct ones).

The product of its digits is 53581500, while the sum is 64.

The spelling of 691717355596 in words is "six hundred ninety-one billion, seven hundred seventeen million, three hundred fifty-five thousand, five hundred ninety-six".