685352253586 has 128 divisors (see below), whose sum is σ = 1425366835200. Its totient is φ = 238536264960.

The previous prime is 685352253373. The next prime is 685352253623.

It is a happy number.

685352253586 is nontrivially palindromic in base 10.

685352253586 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×685352253586² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 685352253586.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 9346855 + ... + 9419893.

It is an arithmetic number, because the mean of its divisors is an integer number (11135678400).

Almost surely, 2^685352253586 is an apocalyptic number.

685352253586 is an abundant number, since it is smaller than the sum of its proper divisors (740014581614).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

685352253586 is a wasteful number, since it uses less digits than its factorization.

685352253586 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73224.

The product of its digits is 51840000, while the sum is 58.

The spelling of 685352253586 in words is "six hundred eighty-five billion, three hundred fifty-two million, two hundred fifty-three thousand, five hundred eighty-six".