2666205 has 24 divisors (see below), whose sum is σ = 4661280. Its totient is φ = 1409760.

The previous prime is 2666201. The next prime is 2666221. The reversal of 2666205 is 5026662.

It is not a de Polignac number, because 2666205 - 2² = 2666201 is a prime.

2666205 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2666201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7890 + ... + 8220.

It is an arithmetic number, because the mean of its divisors is an integer number (194220).

2^2666205 is an apocalyptic number.

It is an amenable number.

2666205 is a deficient number, since it is larger than the sum of its proper divisors (1995075).

2666205 is a wasteful number, since it uses less digits than its factorization.

2666205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 521 (or 518 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 2666205 is about 1632.8517997663. The cubic root of 2666205 is about 138.6642518636.

The spelling of 2666205 in words is "two million, six hundred sixty-six thousand, two hundred five".