685311039933 has 32 divisors (see below), whose sum is σ = 1051865015040. Its totient is φ = 393554895360.

The previous prime is 685311039929. The next prime is 685311039977. The reversal of 685311039933 is 339930113586.

It is not a de Polignac number, because 685311039933 - 2² = 685311039929 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (685311039913) 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, 9280338 + ... + 9353891.

It is an arithmetic number, because the mean of its divisors is an integer number (32870781720).

Almost surely, 2^685311039933 is an apocalyptic number.

It is an amenable number.

685311039933 is a deficient number, since it is larger than the sum of its proper divisors (366553975107).

685311039933 is a wasteful number, since it uses less digits than its factorization.

685311039933 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18634309.

The product of its (nonzero) digits is 1574640, while the sum is 51.

The spelling of 685311039933 in words is "six hundred eighty-five billion, three hundred eleven million, thirty-nine thousand, nine hundred thirty-three".