685774448 has 20 divisors (see below), whose sum is σ = 1398619560. Its totient is φ = 324840384.

The previous prime is 685774423. The next prime is 685774493. The reversal of 685774448 is 844477586.

It is a self number, because there is not a number n which added to its sum of digits gives 685774448.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1127615 + ... + 1128222.

It is an arithmetic number, because the mean of its divisors is an integer number (69930978).

Almost surely, 2^685774448 is an apocalyptic number.

It is an amenable number.

685774448 is an abundant number, since it is smaller than the sum of its proper divisors (712845112).

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

685774448 is a wasteful number, since it uses less digits than its factorization.

685774448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2255864 (or 2255858 counting only the distinct ones).

The product of its digits is 6021120, while the sum is 53.

The square root of 685774448 is about 26187.2955457413. The cubic root of 685774448 is about 881.8480652449.

The spelling of 685774448 in words is "six hundred eighty-five million, seven hundred seventy-four thousand, four hundred forty-eight".