691272696 has 16 divisors (see below), whose sum is σ = 1728181800. Its totient is φ = 230424224.

The previous prime is 691272671. The next prime is 691272709. The reversal of 691272696 is 696272196.

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, 14401491 + ... + 14401538.

Almost surely, 2^691272696 is an apocalyptic number.

It is an amenable number.

691272696 is an abundant number, since it is smaller than the sum of its proper divisors (1036909104).

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

691272696 is a wasteful number, since it uses less digits than its factorization.

691272696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28803038 (or 28803034 counting only the distinct ones).

The product of its digits is 489888, while the sum is 48.

The square root of 691272696 is about 26292.0652669204. The cubic root of 691272696 is about 884.1985556188.

The spelling of 691272696 in words is "six hundred ninety-one million, two hundred seventy-two thousand, six hundred ninety-six".