2066999 has 4 divisors (see below), whose sum is σ = 2254920. Its totient is φ = 1879080.

The previous prime is 2066993. The next prime is 2067001. The reversal of 2066999 is 9996602.

It is a happy number.

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 2066999 - 2¹² = 2062903 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2066993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 93944 + ... + 93965.

It is an arithmetic number, because the mean of its divisors is an integer number (563730).

2^2066999 is an apocalyptic number.

2066999 is a deficient number, since it is larger than the sum of its proper divisors (187921).

2066999 is a wasteful number, since it uses less digits than its factorization.

2066999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187920.

The product of its (nonzero) digits is 52488, while the sum is 41.

The square root of 2066999 is about 1437.7061591299. The cubic root of 2066999 is about 127.3835717870.

The spelling of 2066999 in words is "two million, sixty-six thousand, nine hundred ninety-nine".