691976023196 has 12 divisors (see below), whose sum is σ = 1263608390352. Its totient is φ = 330945054528.

The previous prime is 691976023183. The next prime is 691976023253. The reversal of 691976023196 is 691320679196.

It is a super-2 number, since 2×691976023196² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3760739165 + ... + 3760739348.

It is an arithmetic number, because the mean of its divisors is an integer number (105300699196).

Almost surely, 2^691976023196 is an apocalyptic number.

It is an amenable number.

691976023196 is a deficient number, since it is larger than the sum of its proper divisors (571632367156).

691976023196 is a wasteful number, since it uses less digits than its factorization.

691976023196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7521478540 (or 7521478538 counting only the distinct ones).

The product of its (nonzero) digits is 6613488, while the sum is 59.

The spelling of 691976023196 in words is "six hundred ninety-one billion, nine hundred seventy-six million, twenty-three thousand, one hundred ninety-six".