685322227 has 4 divisors (see below), whose sum is σ = 686822296. Its totient is φ = 683822160.

The previous prime is 685322203. The next prime is 685322243. The reversal of 685322227 is 722223586.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-685322227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (685322327) 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, 749349 + ... + 750262.

It is an arithmetic number, because the mean of its divisors is an integer number (171705574).

Almost surely, 2^685322227 is an apocalyptic number.

685322227 is a deficient number, since it is larger than the sum of its proper divisors (1500069).

685322227 is a wasteful number, since it uses less digits than its factorization.

685322227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1500068.

The product of its digits is 80640, while the sum is 37.

The square root of 685322227 is about 26178.6597632499. The cubic root of 685322227 is about 881.6541832742.

The spelling of 685322227 in words is "six hundred eighty-five million, three hundred twenty-two thousand, two hundred twenty-seven".