2164994 has 8 divisors (see below), whose sum is σ = 3497340. Its totient is φ = 999216.

The previous prime is 2164991. The next prime is 2165017. The reversal of 2164994 is 4994612.

It can be written as a sum of positive squares in 2 ways, for example, as 2146225 + 18769 = 1465^2 + 137^2 .

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

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (2164991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41609 + ... + 41660.

2^2164994 is an apocalyptic number.

2164994 is a deficient number, since it is larger than the sum of its proper divisors (1332346).

2164994 is a wasteful number, since it uses less digits than its factorization.

2164994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83284.

The product of its digits is 15552, while the sum is 35.

The square root of 2164994 is about 1471.3918580718. The cubic root of 2164994 is about 129.3656273792.

The spelling of 2164994 in words is "two million, one hundred sixty-four thousand, nine hundred ninety-four".