2789666 has 16 divisors (see below), whose sum is σ = 4834080. Its totient is φ = 1193280.

The previous prime is 2789629. The next prime is 2789669. The reversal of 2789666 is 6669872.

It is not an unprimeable number, because it can be changed into a prime (2789669) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3356 + ... + 4103.

It is an arithmetic number, because the mean of its divisors is an integer number (302130).

2^2789666 is an apocalyptic number.

2789666 is a deficient number, since it is larger than the sum of its proper divisors (2044414).

2789666 is a wasteful number, since it uses less digits than its factorization.

2789666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7489.

The product of its digits is 217728, while the sum is 44.

The square root of 2789666 is about 1670.2293255718. The cubic root of 2789666 is about 140.7723637757.

The spelling of 2789666 in words is "two million, seven hundred eighty-nine thousand, six hundred sixty-six".