3666880 has 56 divisors (see below), whose sum is σ = 9985248. Its totient is φ = 1256448.

The previous prime is 3666877. The next prime is 3666881. The reversal of 3666880 is 886663.

It is a tau number, because it is divible by the number of its divisors (56).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3666881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1422 + ... + 3058.

It is an arithmetic number, because the mean of its divisors is an integer number (178308).

Almost surely, 2^3666880 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3666880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4992624).

3666880 is an abundant number, since it is smaller than the sum of its proper divisors (6318368).

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

3666880 is a wasteful number, since it uses less digits than its factorization.

3666880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1661 (or 1651 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 37.

The square root of 3666880 is about 1914.9099195524. The cubic root of 3666880 is about 154.2051575022.

The spelling of 3666880 in words is "three million, six hundred sixty-six thousand, eight hundred eighty".