685000486631 has 2 divisors, whose sum is σ = 685000486632. Its totient is φ = 685000486630.

The previous prime is 685000486627. The next prime is 685000486741. The reversal of 685000486631 is 136684000586.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 685000486631 - 2² = 685000486627 is a prime.

It is a super-2 number, since 2×685000486631² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (685000486831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 342500243315 + 342500243316.

It is an arithmetic number, because the mean of its divisors is an integer number (342500243316).

Almost surely, 2^685000486631 is an apocalyptic number.

685000486631 is a deficient number, since it is larger than the sum of its proper divisors (1).

685000486631 is an equidigital number, since it uses as much as digits as its factorization.

685000486631 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 829440, while the sum is 47.

The spelling of 685000486631 in words is "six hundred eighty-five billion, four hundred eighty-six thousand, six hundred thirty-one".