685658263 has 16 divisors (see below), whose sum is σ = 781989120. Its totient is φ = 597131136.

The previous prime is 685658261. The next prime is 685658291. The reversal of 685658263 is 362856586.

685658263 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 685658263 - 2¹ = 685658261 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (685658261) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10795 + ... + 38572.

It is an arithmetic number, because the mean of its divisors is an integer number (48874320).

Almost surely, 2^685658263 is an apocalyptic number.

685658263 is a deficient number, since it is larger than the sum of its proper divisors (96330857).

685658263 is a wasteful number, since it uses less digits than its factorization.

685658263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49446.

The product of its digits is 2073600, while the sum is 49.

The square root of 685658263 is about 26185.0771050994. The cubic root of 685658263 is about 881.7982610639.

The spelling of 685658263 in words is "six hundred eighty-five million, six hundred fifty-eight thousand, two hundred sixty-three".