2066389 has 8 divisors (see below), whose sum is σ = 2322432. Its totient is φ = 1824240.

The previous prime is 2066329. The next prime is 2066399. The reversal of 2066389 is 9836602.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2066389 - 2¹³ = 2058197 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2066329) 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, 3157 + ... + 3754.

It is an arithmetic number, because the mean of its divisors is an integer number (290304).

2^2066389 is an apocalyptic number.

It is an amenable number.

2066389 is a deficient number, since it is larger than the sum of its proper divisors (256043).

2066389 is a wasteful number, since it uses less digits than its factorization.

2066389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6947.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 2066389 is about 1437.4939999875. The cubic root of 2066389 is about 127.3710396694.

The spelling of 2066389 in words is "two million, sixty-six thousand, three hundred eighty-nine".