2164816 has 10 divisors (see below), whose sum is σ = 4194362. Its totient is φ = 1082400.

The previous prime is 2164807. The next prime is 2164817. The reversal of 2164816 is 6184612.

It can be written as a sum of positive squares in only one way, i.e., 1971216 + 193600 = 1404^2 + 440^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2164817) 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 as a sum of consecutive naturals, namely, 67635 + ... + 67666.

2^2164816 is an apocalyptic number.

It is an amenable number.

2164816 is a deficient number, since it is larger than the sum of its proper divisors (2029546).

2164816 is a wasteful number, since it uses less digits than its factorization.

2164816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135309 (or 135303 counting only the distinct ones).

The product of its digits is 2304, while the sum is 28.

The square root of 2164816 is about 1471.3313698824. The cubic root of 2164816 is about 129.3620819171.

The spelling of 2164816 in words is "two million, one hundred sixty-four thousand, eight hundred sixteen".