3681756 has 36 divisors (see below), whose sum is σ = 10023832. Its totient is φ = 1132704.

The previous prime is 3681749. The next prime is 3681761. The reversal of 3681756 is 6571863.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 3681756.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3466 + ... + 4401.

Almost surely, 2^3681756 is an apocalyptic number.

3681756 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

3681756 is an abundant number, since it is smaller than the sum of its proper divisors (6342076).

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

3681756 is a wasteful number, since it uses less digits than its factorization.

3681756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7890 (or 7885 counting only the distinct ones).

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

The square root of 3681756 is about 1918.7902438776. The cubic root of 3681756 is about 154.4134054600.

The spelling of 3681756 in words is "three million, six hundred eighty-one thousand, seven hundred fifty-six".