691936616 has 32 divisors (see below), whose sum is σ = 1530554880. Its totient is φ = 286977600.

The previous prime is 691936613. The next prime is 691936627. The reversal of 691936616 is 616639196.

691936616 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (691936613) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 197555 + ... + 201026.

It is an arithmetic number, because the mean of its divisors is an integer number (47829840).

Almost surely, 2^691936616 is an apocalyptic number.

It is an amenable number.

691936616 is an abundant number, since it is smaller than the sum of its proper divisors (838618264).

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

691936616 is a wasteful number, since it uses less digits than its factorization.

691936616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 398625 (or 398621 counting only the distinct ones).

The product of its digits is 314928, while the sum is 47.

The square root of 691936616 is about 26304.6880992723. The cubic root of 691936616 is about 884.4815357279.

The spelling of 691936616 in words is "six hundred ninety-one million, nine hundred thirty-six thousand, six hundred sixteen".