2890666 has 4 divisors (see below), whose sum is σ = 4336002. Its totient is φ = 1445332.

The previous prime is 2890649. The next prime is 2890669. The reversal of 2890666 is 6660982.

2890666 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1500625 + 1390041 = 1225^2 + 1179^2 .

It is not an unprimeable number, because it can be changed into a prime (2890669) 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 as a sum of consecutive naturals, namely, 722665 + ... + 722668.

2^2890666 is an apocalyptic number.

2890666 is a deficient number, since it is larger than the sum of its proper divisors (1445336).

2890666 is a wasteful number, since it uses less digits than its factorization.

2890666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1445335.

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 2890666 is about 1700.1958710690. The cubic root of 2890666 is about 142.4511538750.

The spelling of 2890666 in words is "two million, eight hundred ninety thousand, six hundred sixty-six".