2066666 has 16 divisors (see below), whose sum is σ = 3626304. Its totient is φ = 864864.

The previous prime is 2066653. The next prime is 2066681. The reversal of 2066666 is 6666602.

It is a super-2 number, since 2×2066666² = 8542216711112, which contains 22 as substring.

2066666 is a modest number, since divided by 6666 gives 206 as remainder.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1115 + ... + 2318.

It is an arithmetic number, because the mean of its divisors is an integer number (226644).

2^2066666 is an apocalyptic number.

2066666 is a deficient number, since it is larger than the sum of its proper divisors (1559638).

2066666 is a wasteful number, since it uses less digits than its factorization.

2066666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3485.

The product of its (nonzero) digits is 15552, while the sum is 32.

The square root of 2066666 is about 1437.5903449871. The cubic root of 2066666 is about 127.3767307891.

The spelling of 2066666 in words is "two million, sixty-six thousand, six hundred sixty-six".