685056650586 has 64 divisors (see below), whose sum is σ = 1711195960320. Its totient is φ = 177624005760.

The previous prime is 685056650573. The next prime is 685056650627.

685056650586 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×685056650586² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1040116 + ... + 1565871.

It is an arithmetic number, because the mean of its divisors is an integer number (26737436880).

Almost surely, 2^685056650586 is an apocalyptic number.

685056650586 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

685056650586 is an abundant number, since it is smaller than the sum of its proper divisors (1026139309734).

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

685056650586 is a wasteful number, since it uses less digits than its factorization.

685056650586 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2606579.

The product of its (nonzero) digits is 51840000, while the sum is 60.

The spelling of 685056650586 in words is "six hundred eighty-five billion, fifty-six million, six hundred fifty thousand, five hundred eighty-six".