2666685 has 32 divisors (see below), whose sum is σ = 4942080. Its totient is φ = 1202688.

The previous prime is 2666683. The next prime is 2666693. The reversal of 2666685 is 5866662.

2666685 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2666685 - 2¹ = 2666683 is a prime.

It is a super-2 number, since 2×2666685² = 14222417778450, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2666683) 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 in 31 ways as a sum of consecutive naturals, for example, 11329 + ... + 11561.

It is an arithmetic number, because the mean of its divisors is an integer number (154440).

2^2666685 is an apocalyptic number.

It is an amenable number.

2666685 is a deficient number, since it is larger than the sum of its proper divisors (2275395).

2666685 is a wasteful number, since it uses less digits than its factorization.

2666685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357.

The product of its digits is 103680, while the sum is 39.

The square root of 2666685 is about 1632.9987752598. The cubic root of 2666685 is about 138.6725726600.

The spelling of 2666685 in words is "two million, six hundred sixty-six thousand, six hundred eighty-five".