3687720 has 64 divisors (see below), whose sum is σ = 11232000. Its totient is φ = 968448.

The previous prime is 3687713. The next prime is 3687731. The reversal of 3687720 is 277863.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9286 + ... + 9674.

It is an arithmetic number, because the mean of its divisors is an integer number (175500).

Almost surely, 2^3687720 is an apocalyptic number.

3687720 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3687720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5616000).

3687720 is an abundant number, since it is smaller than the sum of its proper divisors (7544280).

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

3687720 is a wasteful number, since it uses less digits than its factorization.

3687720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 482 (or 478 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 33.

The square root of 3687720 is about 1920.3437192336. The cubic root of 3687720 is about 154.4967375019.

The spelling of 3687720 in words is "three million, six hundred eighty-seven thousand, seven hundred twenty".