3646668 has 12 divisors (see below), whose sum is σ = 8508920. Its totient is φ = 1215552.

The previous prime is 3646661. The next prime is 3646681. The reversal of 3646668 is 8666463.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (3646661) 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, 151933 + ... + 151956.

Almost surely, 2^3646668 is an apocalyptic number.

It is an amenable number.

3646668 is an abundant number, since it is smaller than the sum of its proper divisors (4862252).

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

3646668 is a wasteful number, since it uses less digits than its factorization.

3646668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303896 (or 303894 counting only the distinct ones).

The product of its digits is 124416, while the sum is 39.

The square root of 3646668 is about 1909.6250940957. The cubic root of 3646668 is about 153.9213068463.

The spelling of 3646668 in words is "three million, six hundred forty-six thousand, six hundred sixty-eight".