685533535 has 16 divisors (see below), whose sum is σ = 865209600. Its totient is φ = 520715520.

The previous prime is 685533503. The next prime is 685533557. The reversal of 685533535 is 535335586.

It is not a de Polignac number, because 685533535 - 2⁵ = 685533503 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 685533491 and 685533500.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33510 + ... + 49939.

It is an arithmetic number, because the mean of its divisors is an integer number (54075600).

Almost surely, 2^685533535 is an apocalyptic number.

685533535 is a deficient number, since it is larger than the sum of its proper divisors (179676065).

685533535 is a wasteful number, since it uses less digits than its factorization.

685533535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83538.

The product of its digits is 810000, while the sum is 43.

The square root of 685533535 is about 26182.6953348963. The cubic root of 685533535 is about 881.7447885548.

The spelling of 685533535 in words is "six hundred eighty-five million, five hundred thirty-three thousand, five hundred thirty-five".