3681369 has 20 divisors (see below), whose sum is σ = 5622144. Its totient is φ = 2399544.

The previous prime is 3681341. The next prime is 3681371. The reversal of 3681369 is 9631863.

It is a happy number.

It is not a de Polignac number, because 3681369 - 2⁸ = 3681113 is a prime.

It is a super-2 number, since 2×3681369² = 27104955428322, which contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (3681319) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3324 + ... + 4290.

Almost surely, 2^3681369 is an apocalyptic number.

It is an amenable number.

3681369 is a deficient number, since it is larger than the sum of its proper divisors (1940775).

3681369 is an equidigital number, since it uses as much as digits as its factorization.

3681369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1026 (or 1017 counting only the distinct ones).

The product of its digits is 23328, while the sum is 36.

The square root of 3681369 is about 1918.6893964371. The cubic root of 3681369 is about 154.4079949908.

The spelling of 3681369 in words is "three million, six hundred eighty-one thousand, three hundred sixty-nine".