685503452 has 12 divisors (see below), whose sum is σ = 1199839536. Its totient is φ = 342692160.

The previous prime is 685503449. The next prime is 685503487. The reversal of 685503452 is 254305586.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20177 + ... + 42167.

It is an arithmetic number, because the mean of its divisors is an integer number (99986628).

Almost surely, 2^685503452 is an apocalyptic number.

It is an amenable number.

685503452 is a deficient number, since it is larger than the sum of its proper divisors (514336084).

685503452 is a wasteful number, since it uses less digits than its factorization.

685503452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29788 (or 29786 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 38.

The square root of 685503452 is about 26182.1208461041. The cubic root of 685503452 is about 881.7318906122.

The spelling of 685503452 in words is "six hundred eighty-five million, five hundred three thousand, four hundred fifty-two".