685890352 has 20 divisors (see below), whose sum is σ = 1518757456. Its totient is φ = 293952960.

The previous prime is 685890311. The next prime is 685890391. The reversal of 685890352 is 253098586.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3061899 + ... + 3062122.

Almost surely, 2^685890352 is an apocalyptic number.

It is an amenable number.

685890352 is an abundant number, since it is smaller than the sum of its proper divisors (832867104).

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

685890352 is a wasteful number, since it uses less digits than its factorization.

685890352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6124036 (or 6124030 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 46.

The square root of 685890352 is about 26189.5084337221. The cubic root of 685890352 is about 881.8977433671.

The spelling of 685890352 in words is "six hundred eighty-five million, eight hundred ninety thousand, three hundred fifty-two".