2164636 has 24 divisors (see below), whose sum is σ = 3958416. Its totient is φ = 1034880.

The previous prime is 2164633. The next prime is 2164639. The reversal of 2164636 is 6364612.

It is an interprime number because it is at equal distance from previous prime (2164633) and next prime (2164639).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2164633) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10890 + ... + 11086.

It is an arithmetic number, because the mean of its divisors is an integer number (164934).

2^2164636 is an apocalyptic number.

It is an amenable number.

2164636 is a deficient number, since it is larger than the sum of its proper divisors (1793780).

2164636 is a wasteful number, since it uses less digits than its factorization.

2164636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309 (or 307 counting only the distinct ones).

The product of its digits is 5184, while the sum is 28.

The square root of 2164636 is about 1471.2701995215. The cubic root of 2164636 is about 129.3584964207.

The spelling of 2164636 in words is "two million, one hundred sixty-four thousand, six hundred thirty-six".