2666379 has 4 divisors (see below), whose sum is σ = 3555176. Its totient is φ = 1777584.

The previous prime is 2666309. The next prime is 2666381. The reversal of 2666379 is 9736662.

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

It is not a de Polignac number, because 2666379 - 2⁹ = 2665867 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2666309) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 444394 + ... + 444399.

It is an arithmetic number, because the mean of its divisors is an integer number (888794).

2^2666379 is an apocalyptic number.

2666379 is a deficient number, since it is larger than the sum of its proper divisors (888797).

2666379 is an equidigital number, since it uses as much as digits as its factorization.

2666379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 888796.

The product of its digits is 81648, while the sum is 39.

The square root of 2666379 is about 1632.9050799113. The cubic root of 2666379 is about 138.6672682676.

The spelling of 2666379 in words is "two million, six hundred sixty-six thousand, three hundred seventy-nine".