685306335 has 32 divisors (see below), whose sum is σ = 1254343680. Its totient is φ = 312979968.

The previous prime is 685306331. The next prime is 685306343. The reversal of 685306335 is 533603586.

It is not a de Polignac number, because 685306335 - 2² = 685306331 is a prime.

It is a super-2 number, since 2×685306335² = 939289545582264450, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 685306293 and 685306302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (685306331) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 134311 + ... + 139319.

It is an arithmetic number, because the mean of its divisors is an integer number (39198240).

Almost surely, 2^685306335 is an apocalyptic number.

685306335 is a deficient number, since it is larger than the sum of its proper divisors (569037345).

685306335 is a wasteful number, since it uses less digits than its factorization.

685306335 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6327.

The product of its (nonzero) digits is 194400, while the sum is 39.

The square root of 685306335 is about 26178.3562318187. The cubic root of 685306335 is about 881.6473683017.

The spelling of 685306335 in words is "six hundred eighty-five million, three hundred six thousand, three hundred thirty-five".