3665480 has 128 divisors (see below), whose sum is σ = 10886400. Its totient is φ = 1078272.

The previous prime is 3665477. The next prime is 3665491. The reversal of 3665480 is 845663.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 69134 + ... + 69186.

It is an arithmetic number, because the mean of its divisors is an integer number (85050).

Almost surely, 2^3665480 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 3665480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5443200).

3665480 is an abundant number, since it is smaller than the sum of its proper divisors (7220920).

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

3665480 is a wasteful number, since it uses less digits than its factorization.

3665480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103 (or 99 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 3665480 is about 1914.5443322107. The cubic root of 3665480 is about 154.1855300350.

The spelling of 3665480 in words is "three million, six hundred sixty-five thousand, four hundred eighty".