685596872507 has 4 divisors (see below), whose sum is σ = 685612189200. Its totient is φ = 685581555816.

The previous prime is 685596872501. The next prime is 685596872533. The reversal of 685596872507 is 705278695586.

685596872507 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 685596872507 - 2⁸ = 685596872251 is a prime.

It is a super-2 number, since 2×685596872507² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (685596872501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7591007 + ... + 7680792.

It is an arithmetic number, because the mean of its divisors is an integer number (171403047300).

Almost surely, 2^685596872507 is an apocalyptic number.

685596872507 is a deficient number, since it is larger than the sum of its proper divisors (15316693).

685596872507 is a wasteful number, since it uses less digits than its factorization.

685596872507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15316692.

The product of its (nonzero) digits is 254016000, while the sum is 68.

The spelling of 685596872507 in words is "six hundred eighty-five billion, five hundred ninety-six million, eight hundred seventy-two thousand, five hundred seven".