685703232 has 252 divisors, whose sum is σ = 2159666496. Its totient is φ = 215550720.

The previous prime is 685703201. The next prime is 685703233. The reversal of 685703232 is 232307586.

685703232 is a `hidden beast` number, since 68 + 570 + 3 + 23 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (685703233) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 9657757 + ... + 9657827.

Almost surely, 2^685703232 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 685703232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1079833248).

685703232 is an abundant number, since it is smaller than the sum of its proper divisors (1473963264).

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

685703232 is an frugal number, since it uses more digits than its factorization.

685703232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130 (or 99 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The square root of 685703232 is about 26185.9357671251. The cubic root of 685703232 is about 881.8175382662.

The spelling of 685703232 in words is "six hundred eighty-five million, seven hundred three thousand, two hundred thirty-two".