685322226 has 48 divisors (see below), whose sum is σ = 1502592000. Its totient is φ = 225729504.

The previous prime is 685322203. The next prime is 685322243. The reversal of 685322226 is 622223586.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 797385 + ... + 798243.

It is an arithmetic number, because the mean of its divisors is an integer number (31304000).

Almost surely, 2^685322226 is an apocalyptic number.

685322226 is an abundant number, since it is smaller than the sum of its proper divisors (817269774).

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

685322226 is a wasteful number, since it uses less digits than its factorization.

685322226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1343 (or 1340 counting only the distinct ones).

The product of its digits is 69120, while the sum is 36.

The square root of 685322226 is about 26178.6597441504. The cubic root of 685322226 is about 881.6541828454.

The spelling of 685322226 in words is "six hundred eighty-five million, three hundred twenty-two thousand, two hundred twenty-six".