3686418 has 32 divisors (see below), whose sum is σ = 8625600. Its totient is φ = 1163808.

The previous prime is 3686411. The next prime is 3686447. The reversal of 3686418 is 8146863.

It is a happy number.

3686418 is a `hidden beast` number, since 3 + 6 + 8 + 641 + 8 = 666.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3686411) 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, 771 + ... + 2822.

It is an arithmetic number, because the mean of its divisors is an integer number (269550).

Almost surely, 2^3686418 is an apocalyptic number.

3686418 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

3686418 is an abundant number, since it is smaller than the sum of its proper divisors (4939182).

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

3686418 is a wasteful number, since it uses less digits than its factorization.

3686418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3623 (or 3617 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 3686418 is about 1920.0046874943. The cubic root of 3686418 is about 154.4785529660.

It can be divided in two parts, 368 and 6418, that added together give a triangular number (6786 = T₁₁₆).

The spelling of 3686418 in words is "three million, six hundred eighty-six thousand, four hundred eighteen".