3681730 has 32 divisors (see below), whose sum is σ = 7225344. Its totient is φ = 1342656.

The previous prime is 3681719. The next prime is 3681731. The reversal of 3681730 is 371863.

It is a Smith number, since the sum of its digits (28) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3681731) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16399 + ... + 16621.

It is an arithmetic number, because the mean of its divisors is an integer number (225792).

Almost surely, 2^3681730 is an apocalyptic number.

3681730 is a deficient number, since it is larger than the sum of its proper divisors (3543614).

3681730 is a wasteful number, since it uses less digits than its factorization.

3681730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 3681730 is about 1918.7834687635. The cubic root of 3681730 is about 154.4130419778.

The spelling of 3681730 in words is "three million, six hundred eighty-one thousand, seven hundred thirty".