2666279 has 16 divisors (see below), whose sum is σ = 3434496. Its totient is φ = 2008800.

The previous prime is 2666273. The next prime is 2666281. The reversal of 2666279 is 9726662.

It is a de Polignac number, because none of the positive numbers 2^k-2666279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2666273) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1829 + ... + 2945.

It is an arithmetic number, because the mean of its divisors is an integer number (214656).

2^2666279 is an apocalyptic number.

2666279 is a deficient number, since it is larger than the sum of its proper divisors (768217).

2666279 is a wasteful number, since it uses less digits than its factorization.

2666279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1166.

The product of its digits is 54432, while the sum is 38.

The square root of 2666279 is about 1632.8744593507. The cubic root of 2666279 is about 138.6655347181.

The spelling of 2666279 in words is "two million, six hundred sixty-six thousand, two hundred seventy-nine".