3900688 has 40 divisors (see below), whose sum is σ = 8481600. Its totient is φ = 1722240.

The previous prime is 3900679. The next prime is 3900691. The reversal of 3900688 is 8860093.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6213 + ... + 6811.

It is an arithmetic number, because the mean of its divisors is an integer number (212040).

Almost surely, 2^3900688 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 3900688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4240800).

3900688 is an abundant number, since it is smaller than the sum of its proper divisors (4580912).

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

3900688 is a wasteful number, since it uses less digits than its factorization.

3900688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 655 (or 649 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 3900688 is about 1975.0159493027. The cubic root of 3900688 is about 157.4153471352.

The spelling of 3900688 in words is "three million, nine hundred thousand, six hundred eighty-eight".