685533365 has 24 divisors (see below), whose sum is σ = 907948440. Its totient is φ = 496517120.

The previous prime is 685533307. The next prime is 685533367. The reversal of 685533365 is 563335586.

685533365 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 103083409 + 582449956 = 10153^2 + 24134^2 .

It is not a de Polignac number, because 685533365 - 2⁶ = 685533301 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (685533367) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 153281 + ... + 157689.

It is an arithmetic number, because the mean of its divisors is an integer number (37831185).

Almost surely, 2^685533365 is an apocalyptic number.

It is an amenable number.

685533365 is a deficient number, since it is larger than the sum of its proper divisors (222415075).

685533365 is a wasteful number, since it uses less digits than its factorization.

685533365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4693 (or 4682 counting only the distinct ones).

The product of its digits is 972000, while the sum is 44.

The square root of 685533365 is about 26182.6920884771. The cubic root of 685533365 is about 881.7447156691.

The spelling of 685533365 in words is "six hundred eighty-five million, five hundred thirty-three thousand, three hundred sixty-five".