2169006 has 32 divisors (see below), whose sum is σ = 5077248. Its totient is φ = 604800.

The previous prime is 2168989. The next prime is 2169007. The reversal of 2169006 is 6009612.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2169007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1206 + ... + 2406.

It is an arithmetic number, because the mean of its divisors is an integer number (158664).

2^2169006 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2169006, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2538624).

2169006 is an abundant number, since it is smaller than the sum of its proper divisors (2908242).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2169006 is a wasteful number, since it uses less digits than its factorization.

2169006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1256.

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 2169006 is about 1472.7545620367. The cubic root of 2169006 is about 129.4454882052.

Subtracting 2169006 from its reverse (6009612), we obtain a triangular number (3840606 = T₂₇₇₁).

The spelling of 2169006 in words is "two million, one hundred sixty-nine thousand, six".