2164881 has 8 divisors (see below), whose sum is σ = 2902240. Its totient is φ = 1435392.

The previous prime is 2164859. The next prime is 2164901. The reversal of 2164881 is 1884612.

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

It is not a de Polignac number, because 2164881 - 2⁶ = 2164817 is a prime.

It is a super-2 number, since 2×2164881² = 9373419488322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2164801) 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, 1291 + ... + 2448.

It is an arithmetic number, because the mean of its divisors is an integer number (362780).

2^2164881 is an apocalyptic number.

It is an amenable number.

2164881 is a deficient number, since it is larger than the sum of its proper divisors (737359).

2164881 is a wasteful number, since it uses less digits than its factorization.

2164881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3935.

The product of its digits is 3072, while the sum is 30.

The square root of 2164881 is about 1471.3534585544. The cubic root of 2164881 is about 129.3633766309.

The spelling of 2164881 in words is "two million, one hundred sixty-four thousand, eight hundred eighty-one".