2006999 has 4 divisors (see below), whose sum is σ = 2025864. Its totient is φ = 1988136.

The previous prime is 2006959. The next prime is 2007001. The reversal of 2006999 is 9996002.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9996002 = 2 ⋅4998001.

It is a cyclic number.

It is not a de Polignac number, because 2006999 - 2²⁰ = 958423 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is a zygodrome in base 6.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2006929) 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, 9272 + ... + 9485.

It is an arithmetic number, because the mean of its divisors is an integer number (506466).

2^2006999 is an apocalyptic number.

2006999 is a deficient number, since it is larger than the sum of its proper divisors (18865).

2006999 is a wasteful number, since it uses less digits than its factorization.

2006999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18864.

The product of its (nonzero) digits is 8748, while the sum is 35.

The square root of 2006999 is about 1416.6859214378. The cubic root of 2006999 is about 126.1389036722.

The spelling of 2006999 in words is "two million, six thousand, nine hundred ninety-nine".