685495155575 has 6 divisors (see below), whose sum is σ = 850013992944. Its totient is φ = 548396124440.

The previous prime is 685495155571. The next prime is 685495155613. The reversal of 685495155575 is 575551594586.

It is a happy number.

It is not a de Polignac number, because 685495155575 - 2² = 685495155571 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (685495155571) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13709903087 + ... + 13709903136.

It is an arithmetic number, because the mean of its divisors is an integer number (141668998824).

Almost surely, 2^685495155575 is an apocalyptic number.

685495155575 is a deficient number, since it is larger than the sum of its proper divisors (164518837369).

685495155575 is a wasteful number, since it uses less digits than its factorization.

685495155575 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27419806233 (or 27419806228 counting only the distinct ones).

The product of its digits is 189000000, while the sum is 65.

The spelling of 685495155575 in words is "six hundred eighty-five billion, four hundred ninety-five million, one hundred fifty-five thousand, five hundred seventy-five".