3681765 has 12 divisors (see below), whose sum is σ = 6381804. Its totient is φ = 1963584.

The previous prime is 3681761. The next prime is 3681767. The reversal of 3681765 is 5671863.

It can be written as a sum of positive squares in 2 ways, for example, as 580644 + 3101121 = 762^2 + 1761^2 .

It is not a de Polignac number, because 3681765 - 2² = 3681761 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3681761) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40864 + ... + 40953.

It is an arithmetic number, because the mean of its divisors is an integer number (531817).

Almost surely, 2^3681765 is an apocalyptic number.

It is an amenable number.

3681765 is a deficient number, since it is larger than the sum of its proper divisors (2700039).

3681765 is a wasteful number, since it uses less digits than its factorization.

3681765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81828 (or 81825 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 3681765 is about 1918.7925891039. The cubic root of 3681765 is about 154.4135312803.

The spelling of 3681765 in words is "three million, six hundred eighty-one thousand, seven hundred sixty-five".