685342244 has 6 divisors (see below), whose sum is σ = 1199348934. Its totient is φ = 342671120.

The previous prime is 685342237. The next prime is 685342253. The reversal of 685342244 is 442243586.

It is a happy number.

685342244 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 684868900 + 473344 = 26170^2 + 688^2 .

It is a junction number, because it is equal to n+sod(n) for n = 685342198 and 685342207.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85667777 + ... + 85667784.

It is an arithmetic number, because the mean of its divisors is an integer number (199891489).

Almost surely, 2^685342244 is an apocalyptic number.

It is an amenable number.

685342244 is a deficient number, since it is larger than the sum of its proper divisors (514006690).

685342244 is a wasteful number, since it uses less digits than its factorization.

685342244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171335565 (or 171335563 counting only the distinct ones).

The product of its digits is 184320, while the sum is 38.

The square root of 685342244 is about 26179.0420756757. The cubic root of 685342244 is about 881.6627670223.

It can be divided in two parts, 685342 and 244, that added together give a palindrome (685586).

The spelling of 685342244 in words is "six hundred eighty-five million, three hundred forty-two thousand, two hundred forty-four".