690883686 has 12 divisors (see below), whose sum is σ = 1496914692. Its totient is φ = 230294556.

The previous prime is 690883679. The next prime is 690883703. The reversal of 690883686 is 686388096.

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 5 ways as a sum of consecutive naturals, for example, 19191196 + ... + 19191231.

It is an arithmetic number, because the mean of its divisors is an integer number (124742891).

Almost surely, 2^690883686 is an apocalyptic number.

690883686 is an abundant number, since it is smaller than the sum of its proper divisors (806031006).

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

690883686 is a wasteful number, since it uses less digits than its factorization.

690883686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38382435 (or 38382432 counting only the distinct ones).

The product of its (nonzero) digits is 2985984, while the sum is 54.

The square root of 690883686 is about 26284.6663665339. Note that the first 3 decimals coincide. The cubic root of 690883686 is about 884.0326651662.

The spelling of 690883686 in words is "six hundred ninety million, eight hundred eighty-three thousand, six hundred eighty-six".