685332630631 has 16 divisors (see below), whose sum is σ = 781812165888. Its totient is φ = 594665209600.

The previous prime is 685332630623. The next prime is 685332630707. The reversal of 685332630631 is 136036233586.

It is not a de Polignac number, because 685332630631 - 2³ = 685332630623 is a prime.

It is a super-2 number, since 2×685332630631² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (685332633631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2782090 + ... + 3018391.

It is an arithmetic number, because the mean of its divisors is an integer number (48863260368).

Almost surely, 2^685332630631 is an apocalyptic number.

685332630631 is a deficient number, since it is larger than the sum of its proper divisors (96479535257).

685332630631 is a wasteful number, since it uses less digits than its factorization.

685332630631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5800982.

The product of its (nonzero) digits is 1399680, while the sum is 46.

The spelling of 685332630631 in words is "six hundred eighty-five billion, three hundred thirty-two million, six hundred thirty thousand, six hundred thirty-one".