4066660 has 24 divisors (see below), whose sum is σ = 9197496. Its totient is φ = 1501440.

The previous prime is 4066619. The next prime is 4066661. The reversal of 4066660 is 666604.

4066660 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 891136 + 3175524 = 944^2 + 1782^2 .

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (4066661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7561 + ... + 8080.

It is an arithmetic number, because the mean of its divisors is an integer number (383229).

Almost surely, 2^4066660 is an apocalyptic number.

It is an amenable number.

4066660 is an abundant number, since it is smaller than the sum of its proper divisors (5130836).

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

4066660 is a wasteful number, since it uses less digits than its factorization.

4066660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15663 (or 15661 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 4066660 is about 2016.5961420175. The cubic root of 4066660 is about 159.6170529284.

The spelling of 4066660 in words is "four million, sixty-six thousand, six hundred sixty".