691697682 has 48 divisors (see below), whose sum is σ = 1638087360. Its totient is φ = 209648736.

The previous prime is 691697659. The next prime is 691697689. The reversal of 691697682 is 286796196.

It is not an unprimeable number, because it can be changed into a prime (691697689) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 6382 + ... + 37737.

It is an arithmetic number, because the mean of its divisors is an integer number (34126820).

Almost surely, 2^691697682 is an apocalyptic number.

691697682 is an abundant number, since it is smaller than the sum of its proper divisors (946389678).

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

691697682 is a wasteful number, since it uses less digits than its factorization.

691697682 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44207 (or 44204 counting only the distinct ones).

The product of its digits is 1959552, while the sum is 54.

The square root of 691697682 is about 26300.1460452219. The cubic root of 691697682 is about 884.3797166517.

The spelling of 691697682 in words is "six hundred ninety-one million, six hundred ninety-seven thousand, six hundred eighty-two".