2708666 has 4 divisors (see below), whose sum is σ = 4063002. Its totient is φ = 1354332.

The previous prime is 2708663. The next prime is 2708669. The reversal of 2708666 is 6668072.

2708666 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 is an interprime number because it is at equal distance from previous prime (2708663) and next prime (2708669).

It can be written as a sum of positive squares in only one way, i.e., 1452025 + 1256641 = 1205^2 + 1121^2 .

It is a nialpdrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (2708663) 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, 677165 + ... + 677168.

2^2708666 is an apocalyptic number.

2708666 is a deficient number, since it is larger than the sum of its proper divisors (1354336).

2708666 is a wasteful number, since it uses less digits than its factorization.

2708666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1354335.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 2708666 is about 1645.8025397963. The cubic root of 2708666 is about 139.3964837146.

The spelling of 2708666 in words is "two million, seven hundred eight thousand, six hundred sixty-six".