685750356 has 144 divisors (see below), whose sum is σ = 1907942400. Its totient is φ = 206841600.

The previous prime is 685750321. The next prime is 685750361. The reversal of 685750356 is 653057586.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3590221 + ... + 3590411.

It is an arithmetic number, because the mean of its divisors is an integer number (13249600).

Almost surely, 2^685750356 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 685750356, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (953971200).

685750356 is an abundant number, since it is smaller than the sum of its proper divisors (1222192044).

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

685750356 is a wasteful number, since it uses less digits than its factorization.

685750356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430 (or 425 counting only the distinct ones).

The product of its (nonzero) digits is 756000, while the sum is 45.

The square root of 685750356 is about 26186.8355476564. The cubic root of 685750356 is about 881.8377383644.

The spelling of 685750356 in words is "six hundred eighty-five million, seven hundred fifty thousand, three hundred fifty-six".