691716456 has 32 divisors (see below), whose sum is σ = 1921435200. Its totient is φ = 230572080.

The previous prime is 691716449. The next prime is 691716461. The reversal of 691716456 is 654617196.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1600980 + ... + 1601411.

It is an arithmetic number, because the mean of its divisors is an integer number (60044850).

Almost surely, 2^691716456 is an apocalyptic number.

It is an amenable number.

691716456 is an abundant number, since it is smaller than the sum of its proper divisors (1229718744).

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

691716456 is a wasteful number, since it uses less digits than its factorization.

691716456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3202406 (or 3202396 counting only the distinct ones).

The product of its digits is 272160, while the sum is 45.

The square root of 691716456 is about 26300.5029609702. The cubic root of 691716456 is about 884.3877178325.

The spelling of 691716456 in words is "six hundred ninety-one million, seven hundred sixteen thousand, four hundred fifty-six".