2164006 has 8 divisors (see below), whose sum is σ = 3495744. Its totient is φ = 998760.

The previous prime is 2164003. The next prime is 2164013. The reversal of 2164006 is 6004612.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2164003) by changing a digit.

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, 41590 + ... + 41641.

It is an arithmetic number, because the mean of its divisors is an integer number (436968).

2^2164006 is an apocalyptic number.

2164006 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

2164006 is a deficient number, since it is larger than the sum of its proper divisors (1331738).

2164006 is a wasteful number, since it uses less digits than its factorization.

2164006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83246.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 2164006 is about 1471.0560832273. The cubic root of 2164006 is about 129.3459456176.

Adding to 2164006 its reverse (6004612), we get a palindrome (8168618).

Subtracting 2164006 from its reverse (6004612), we obtain a triangular number (3840606 = T₂₇₇₁).

The spelling of 2164006 in words is "two million, one hundred sixty-four thousand, six".