2666149 has 4 divisors (see below), whose sum is σ = 2671200. Its totient is φ = 2661100.

The previous prime is 2666141. The next prime is 2666177. The reversal of 2666149 is 9416662.

2666149 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2666149 - 2³ = 2666141 is a prime.

It is an Ulam number.

It is a Duffinian number.

2666149 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2666141) 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 3 ways as a sum of consecutive naturals, for example, 1627 + ... + 2824.

It is an arithmetic number, because the mean of its divisors is an integer number (667800).

2^2666149 is an apocalyptic number.

It is an amenable number.

2666149 is a deficient number, since it is larger than the sum of its proper divisors (5051).

2666149 is an equidigital number, since it uses as much as digits as its factorization.

2666149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5050.

The product of its digits is 15552, while the sum is 34.

The square root of 2666149 is about 1632.8346517636. The cubic root of 2666149 is about 138.6632810389.

The spelling of 2666149 in words is "two million, six hundred sixty-six thousand, one hundred forty-nine".