2072666 has 12 divisors (see below), whose sum is σ = 3199518. Its totient is φ = 1006992.

The previous prime is 2072663. The next prime is 2072683. The reversal of 2072666 is 6662702.

It can be written as a sum of positive squares in 3 ways, for example, as 2042041 + 30625 = 1429^2 + 175^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2072663) 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 5 ways as a sum of consecutive naturals, for example, 2360 + ... + 3116.

2^2072666 is an apocalyptic number.

2072666 is a deficient number, since it is larger than the sum of its proper divisors (1126852).

2072666 is an equidigital number, since it uses as much as digits as its factorization.

2072666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 833 (or 796 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 2072666 is about 1439.6756579174. The cubic root of 2072666 is about 127.4998795334.

The spelling of 2072666 in words is "two million, seventy-two thousand, six hundred sixty-six".