685742322 has 16 divisors (see below), whose sum is σ = 1381353120. Its totient is φ = 226936032.

The previous prime is 685742303. The next prime is 685742327. The reversal of 685742322 is 223247586.

It is not an unprimeable number, because it can be changed into a prime (685742327) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 410283 + ... + 411950.

It is an arithmetic number, because the mean of its divisors is an integer number (86334570).

Almost surely, 2^685742322 is an apocalyptic number.

685742322 is an abundant number, since it is smaller than the sum of its proper divisors (695610798).

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

685742322 is a wasteful number, since it uses less digits than its factorization.

685742322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 822377.

The product of its digits is 161280, while the sum is 39.

The square root of 685742322 is about 26186.6821495202. The cubic root of 685742322 is about 881.8342945883.

The spelling of 685742322 in words is "six hundred eighty-five million, seven hundred forty-two thousand, three hundred twenty-two".