691227586456 has 32 divisors (see below), whose sum is σ = 1416359552400. Its totient is φ = 313642147840.

The previous prime is 691227586433. The next prime is 691227586477. The reversal of 691227586456 is 654685722196.

It is a junction number, because it is equal to n+sod(n) for n = 691227586394 and 691227586403.

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, 6852265 + ... + 6952408.

Almost surely, 2^691227586456 is an apocalyptic number.

It is an amenable number.

691227586456 is an abundant number, since it is smaller than the sum of its proper divisors (725131965944).

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

691227586456 is a wasteful number, since it uses less digits than its factorization.

691227586456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13805259 (or 13805255 counting only the distinct ones).

The product of its digits is 43545600, while the sum is 61.

The spelling of 691227586456 in words is "six hundred ninety-one billion, two hundred twenty-seven million, five hundred eighty-six thousand, four hundred fifty-six".