685030752 has 144 divisors (see below), whose sum is σ = 2248646400. Its totient is φ = 193764096.

The previous prime is 685030733. The next prime is 685030763. The reversal of 685030752 is 257030586.

It is a tau number, because it is divible by the number of its divisors (144).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 205999 + ... + 209297.

It is an arithmetic number, because the mean of its divisors is an integer number (15615600).

Almost surely, 2^685030752 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 685030752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1124323200).

685030752 is an abundant number, since it is smaller than the sum of its proper divisors (1563615648).

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

685030752 is a wasteful number, since it uses less digits than its factorization.

685030752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3425 (or 3414 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 685030752 is about 26173.0921367728. The cubic root of 685030752 is about 881.5291731774.

The spelling of 685030752 in words is "six hundred eighty-five million, thirty thousand, seven hundred fifty-two".