685112227 has 6 divisors (see below), whose sum is σ = 694631292. Its totient is φ = 675721872.

The previous prime is 685112221. The next prime is 685112243. The reversal of 685112227 is 722211586.

It is a happy number.

It is not a de Polignac number, because 685112227 - 2¹⁵ = 685079459 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 685112192 and 685112201.

It is not an unprimeable number, because it can be changed into a prime (685112221) 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, 58953 + ... + 69610.

It is an arithmetic number, because the mean of its divisors is an integer number (115771882).

Almost surely, 2^685112227 is an apocalyptic number.

685112227 is a deficient number, since it is larger than the sum of its proper divisors (9519065).

685112227 is an equidigital number, since it uses as much as digits as its factorization.

685112227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128709 (or 128636 counting only the distinct ones).

The product of its digits is 13440, while the sum is 34.

The square root of 685112227 is about 26174.6485554248. The cubic root of 685112227 is about 881.5641203882.

The spelling of 685112227 in words is "six hundred eighty-five million, one hundred twelve thousand, two hundred twenty-seven".