2068666 has 8 divisors (see below), whose sum is σ = 3237984. Its totient is φ = 989340.

The previous prime is 2068639. The next prime is 2068667. The reversal of 2068666 is 6668602.

2068666 = 138² + 139² + ... + 206².

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (2068667) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22440 + ... + 22531.

It is an arithmetic number, because the mean of its divisors is an integer number (404748).

2^2068666 is an apocalyptic number.

2068666 is a deficient number, since it is larger than the sum of its proper divisors (1169318).

2068666 is a wasteful number, since it uses less digits than its factorization.

2068666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44996.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 2068666 is about 1438.2857852319. The cubic root of 2068666 is about 127.4178068229.

It can be divided in two parts, 20 and 68666, that added together give a palindrome (68686).

The spelling of 2068666 in words is "two million, sixty-eight thousand, six hundred sixty-six".