685086263 has 2 divisors, whose sum is σ = 685086264. Its totient is φ = 685086262.

The previous prime is 685086251. The next prime is 685086317. The reversal of 685086263 is 362680586.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 685086263 - 2⁸ = 685086007 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (685086203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 342543131 + 342543132.

It is an arithmetic number, because the mean of its divisors is an integer number (342543132).

Almost surely, 2^685086263 is an apocalyptic number.

685086263 is a deficient number, since it is larger than the sum of its proper divisors (1).

685086263 is an equidigital number, since it uses as much as digits as its factorization.

685086263 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 414720, while the sum is 44.

The square root of 685086263 is about 26174.1525746298. The cubic root of 685086263 is about 881.5529839062.

The spelling of 685086263 in words is "six hundred eighty-five million, eighty-six thousand, two hundred sixty-three".