3681980 has 24 divisors (see below), whose sum is σ = 7898688. Its totient is φ = 1441088.

The previous prime is 3681967. The next prime is 3682031. The reversal of 3681980 is 891863.

It is a self number, because there is not a number n which added to its sum of digits gives 3681980.

It is a congruent number.

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, 1019 + ... + 2898.

It is an arithmetic number, because the mean of its divisors is an integer number (329112).

Almost surely, 2^3681980 is an apocalyptic number.

It is an amenable number.

3681980 is an abundant number, since it is smaller than the sum of its proper divisors (4216708).

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

3681980 is a wasteful number, since it uses less digits than its factorization.

3681980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3973 (or 3971 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 3681980 is about 1918.8486131011. The cubic root of 3681980 is about 154.4165369278.

The spelling of 3681980 in words is "three million, six hundred eighty-one thousand, nine hundred eighty".