685880832 has 240 divisors, whose sum is σ = 2292322032. Its totient is φ = 180633600.

The previous prime is 685880821. The next prime is 685880851. The reversal of 685880832 is 238088586.

It is a Harshad number since it is a multiple of its sum of digits (48).

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 23 ways as a sum of consecutive naturals, for example, 978082 + ... + 978782.

Almost surely, 2^685880832 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 685880832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1146161016).

685880832 is an abundant number, since it is smaller than the sum of its proper divisors (1606441200).

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

685880832 is a wasteful number, since it uses less digits than its factorization.

685880832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 749 (or 726 counting only the distinct ones).

The product of its (nonzero) digits is 737280, while the sum is 48.

The square root of 685880832 is about 26189.3266809210. The cubic root of 685880832 is about 881.8936631691.

The spelling of 685880832 in words is "six hundred eighty-five million, eight hundred eighty thousand, eight hundred thirty-two".