685000486831 has 2 divisors, whose sum is σ = 685000486832. Its totient is φ = 685000486830.

The previous prime is 685000486823. The next prime is 685000486873. The reversal of 685000486831 is 138684000586.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 685000486831 - 2³ = 685000486823 is a prime.

It is a super-2 number, since 2×685000486831² (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 (685000486631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 342500243415 + 342500243416.

It is an arithmetic number, because the mean of its divisors is an integer number (342500243416).

Almost surely, 2^685000486831 is an apocalyptic number.

685000486831 is a deficient number, since it is larger than the sum of its proper divisors (1).

685000486831 is an equidigital number, since it uses as much as digits as its factorization.

685000486831 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1105920, while the sum is 49.

The spelling of 685000486831 in words is "six hundred eighty-five billion, four hundred eighty-six thousand, eight hundred thirty-one".