2165006 has 8 divisors (see below), whose sum is σ = 3254160. Its totient is φ = 1080288.

The previous prime is 2164991. The next prime is 2165017. The reversal of 2165006 is 6005612.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 710 + ... + 2198.

It is an arithmetic number, because the mean of its divisors is an integer number (406770).

2^2165006 is an apocalyptic number.

2165006 is a deficient number, since it is larger than the sum of its proper divisors (1089154).

2165006 is a wasteful number, since it uses less digits than its factorization.

2165006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2218.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 2165006 is about 1471.3959358378. The cubic root of 2165006 is about 129.3658663922.

Subtracting 2165006 from its reverse (6005612), we obtain a triangular number (3840606 = T₂₇₇₁).

The spelling of 2165006 in words is "two million, one hundred sixty-five thousand, six".