691426896 has 20 divisors (see below), whose sum is σ = 1786186272. Its totient is φ = 230475616.

The previous prime is 691426877. The next prime is 691426913. The reversal of 691426896 is 698624196.

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 in 3 ways as a sum of consecutive naturals, for example, 7202316 + ... + 7202411.

Almost surely, 2^691426896 is an apocalyptic number.

It is an amenable number.

691426896 is an abundant number, since it is smaller than the sum of its proper divisors (1094759376).

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

691426896 is a wasteful number, since it uses less digits than its factorization.

691426896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14404738 (or 14404732 counting only the distinct ones).

The product of its digits is 1119744, while the sum is 51.

The square root of 691426896 is about 26294.9975470621. The cubic root of 691426896 is about 884.2642958500.

The spelling of 691426896 in words is "six hundred ninety-one million, four hundred twenty-six thousand, eight hundred ninety-six".