685069400 has 48 divisors (see below), whose sum is σ = 1686488040. Its totient is φ = 257907200.

The previous prime is 685069379. The next prime is 685069457. The reversal of 685069400 is 4960586.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 97346 + ... + 104145.

Almost surely, 2^685069400 is an apocalyptic number.

It is an amenable number.

685069400 is an abundant number, since it is smaller than the sum of its proper divisors (1001418640).

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

685069400 is a wasteful number, since it uses less digits than its factorization.

685069400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201524 (or 201515 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 685069400 is about 26173.8304418746. The cubic root of 685069400 is about 881.5457508754.

The spelling of 685069400 in words is "six hundred eighty-five million, sixty-nine thousand, four hundred".