685503474 has 16 divisors (see below), whose sum is σ = 1387526112. Its totient is φ = 225747968.

The previous prime is 685503449. The next prime is 685503487. The reversal of 685503474 is 474305586.

It is a super-3 number, since 3×685503474³ (a number of 27 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax 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 7 ways as a sum of consecutive naturals, for example, 687759 + ... + 688754.

It is an arithmetic number, because the mean of its divisors is an integer number (86720382).

Almost surely, 2^685503474 is an apocalyptic number.

685503474 is an abundant number, since it is smaller than the sum of its proper divisors (702022638).

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

685503474 is a wasteful number, since it uses less digits than its factorization.

685503474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1376601.

The product of its (nonzero) digits is 403200, while the sum is 42.

The square root of 685503474 is about 26182.1212662382. The cubic root of 685503474 is about 881.7319000447.

The spelling of 685503474 in words is "six hundred eighty-five million, five hundred three thousand, four hundred seventy-four".