691927796 has 24 divisors (see below), whose sum is σ = 1413302016. Its totient is φ = 290230560.

The previous prime is 691927783. The next prime is 691927867. The reversal of 691927796 is 697729196.

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 7 ways as a sum of consecutive naturals, for example, 261575 + ... + 264206.

It is an arithmetic number, because the mean of its divisors is an integer number (58887584).

Almost surely, 2^691927796 is an apocalyptic number.

It is an amenable number.

691927796 is an abundant number, since it is smaller than the sum of its proper divisors (721374220).

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

691927796 is a wasteful number, since it uses less digits than its factorization.

691927796 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 525839 (or 525837 counting only the distinct ones).

The product of its digits is 2571912, while the sum is 56.

The square root of 691927796 is about 26304.5204480143. The cubic root of 691927796 is about 884.4777775994.

The spelling of 691927796 in words is "six hundred ninety-one million, nine hundred twenty-seven thousand, seven hundred ninety-six".