2066659 has 4 divisors (see below), whose sum is σ = 2361904. Its totient is φ = 1771416.

The previous prime is 2066653. The next prime is 2066681. The reversal of 2066659 is 9566602.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2066659 - 2¹¹ = 2064611 is a prime.

It is a Duffinian number.

2066659 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2066653) 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, 147612 + ... + 147625.

It is an arithmetic number, because the mean of its divisors is an integer number (590476).

2^2066659 is an apocalyptic number.

2066659 is a deficient number, since it is larger than the sum of its proper divisors (295245).

2066659 is an equidigital number, since it uses as much as digits as its factorization.

2066659 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295244.

The product of its (nonzero) digits is 19440, while the sum is 34.

The square root of 2066659 is about 1437.5879103554. The cubic root of 2066659 is about 127.3765869765.

The spelling of 2066659 in words is "two million, sixty-six thousand, six hundred fifty-nine".