691454912 has 14 divisors (see below), whose sum is σ = 1372105968. Its totient is φ = 345727424.

The previous prime is 691454899. The next prime is 691454971. The reversal of 691454912 is 219454196.

It is a self number, because there is not a number n which added to its sum of digits gives 691454912.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 5401928 + ... + 5402055.

Almost surely, 2^691454912 is an apocalyptic number.

It is an amenable number.

691454912 is a deficient number, since it is larger than the sum of its proper divisors (680651056).

691454912 is a wasteful number, since it uses less digits than its factorization.

691454912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10803995 (or 10803985 counting only the distinct ones).

The product of its digits is 77760, while the sum is 41.

The square root of 691454912 is about 26295.5302665681. The cubic root of 691454912 is about 884.2762388884.

The spelling of 691454912 in words is "six hundred ninety-one million, four hundred fifty-four thousand, nine hundred twelve".