3666320 has 40 divisors (see below), whose sum is σ = 9743424. Its totient is φ = 1256832.

The previous prime is 3666317. The next prime is 3666323. The reversal of 3666320 is 236663.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (3666317) and next prime (3666323).

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 3666320.

It is not an unprimeable number, because it can be changed into a prime (3666323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2714 + ... + 3833.

Almost surely, 2^3666320 is an apocalyptic number.

It is an amenable number.

3666320 is an abundant number, since it is smaller than the sum of its proper divisors (6077104).

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

3666320 is a wasteful number, since it uses less digits than its factorization.

3666320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6567 (or 6561 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 26.

The square root of 3666320 is about 1914.7636929919. The cubic root of 3666320 is about 154.1973071149.

The spelling of 3666320 in words is "three million, six hundred sixty-six thousand, three hundred twenty".