2666666 has 16 divisors (see below), whose sum is σ = 4320000. Its totient is φ = 1230768.

The previous prime is 2666663. The next prime is 2666683. The reversal of 2666666 is 6666662.

It is a super-2 number, since 2×2666666² = 14222215111112, which contains 22 as substring.

2666666 is a modest number, since divided by 6666 gives 266 as remainder.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (2666663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 335 + ... + 2333.

It is an arithmetic number, because the mean of its divisors is an integer number (270000).

2^2666666 is an apocalyptic number.

2666666 is a deficient number, since it is larger than the sum of its proper divisors (1653334).

2666666 is a wasteful number, since it uses less digits than its factorization.

2666666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2053.

The product of its digits is 93312, while the sum is 38.

The square root of 2666666 is about 1632.9929577313. The cubic root of 2666666 is about 138.6722433141.

The spelling of 2666666 in words is "two million, six hundred sixty-six thousand, six hundred sixty-six".