3668644 has 12 divisors (see below), whose sum is σ = 7337344. Its totient is φ = 1572264.

The previous prime is 3668629. The next prime is 3668647. The reversal of 3668644 is 4468663.

3668644 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (3668647) 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, 65484 + ... + 65539.

Almost surely, 2^3668644 is an apocalyptic number.

It is an amenable number.

3668644 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

3668644 is a wasteful number, since it uses less digits than its factorization.

3668644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131034 (or 131032 counting only the distinct ones).

The product of its digits is 82944, while the sum is 37.

The square root of 3668644 is about 1915.3704602504. The cubic root of 3668644 is about 154.2298809993.

It can be divided in two parts, 36 and 68644, that multiplied together give a square (2471184 = 1572²).

The spelling of 3668644 in words is "three million, six hundred sixty-eight thousand, six hundred forty-four".