685698033045 has 16 divisors (see below), whose sum is σ = 1097604297792. Its totient is φ = 365543136000.

The previous prime is 685698033017. The next prime is 685698033047. The reversal of 685698033045 is 540330896586.

It is a happy number.

It is not a de Polignac number, because 685698033045 - 2¹⁰ = 685698032021 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (685698033047) 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, 10120212 + ... + 10187741.

It is an arithmetic number, because the mean of its divisors is an integer number (68600268612).

Almost surely, 2^685698033045 is an apocalyptic number.

It is an amenable number.

685698033045 is a deficient number, since it is larger than the sum of its proper divisors (411906264747).

685698033045 is a wasteful number, since it uses less digits than its factorization.

685698033045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20310212.

The product of its (nonzero) digits is 18662400, while the sum is 57.

The spelling of 685698033045 in words is "six hundred eighty-five billion, six hundred ninety-eight million, thirty-three thousand, forty-five".