3682661 has 4 divisors (see below), whose sum is σ = 3772524. Its totient is φ = 3592800.

The previous prime is 3682643. The next prime is 3682667. The reversal of 3682661 is 1662863.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 185761 + 3496900 = 431^2 + 1870^2 .

It is a cyclic number.

It is not a de Polignac number, because 3682661 - 2⁶ = 3682597 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3682667) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44870 + ... + 44951.

It is an arithmetic number, because the mean of its divisors is an integer number (943131).

Almost surely, 2^3682661 is an apocalyptic number.

It is an amenable number.

3682661 is a deficient number, since it is larger than the sum of its proper divisors (89863).

3682661 is an equidigital number, since it uses as much as digits as its factorization.

3682661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89862.

The product of its digits is 10368, while the sum is 32.

The square root of 3682661 is about 1919.0260550602. The cubic root of 3682661 is about 154.4260563692.

The spelling of 3682661 in words is "three million, six hundred eighty-two thousand, six hundred sixty-one".