685127 has 4 divisors (see below), whose sum is σ = 687000. Its totient is φ = 683256.

The previous prime is 685123. The next prime is 685141. The reversal of 685127 is 721586.

685127 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 685127 - 2² = 685123 is a prime.

It is a super-2 number, since 2×685127² = 938798012258, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 685127.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (685123) 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, 188 + ... + 1185.

It is an arithmetic number, because the mean of its divisors is an integer number (171750).

2⁶⁸⁵¹²⁷ is an apocalyptic number.

685127 is a deficient number, since it is larger than the sum of its proper divisors (1873).

685127 is a wasteful number, since it uses less digits than its factorization.

685127 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1872.

The product of its digits is 3360, while the sum is 29.

The square root of 685127 is about 827.7239878124. The cubic root of 685127 is about 88.1570456700.

The spelling of 685127 in words is "six hundred eighty-five thousand, one hundred twenty-seven".