2161608 has 16 divisors (see below), whose sum is σ = 5404080. Its totient is φ = 720528.

The previous prime is 2161591. The next prime is 2161613. The reversal of 2161608 is 8061612.

2161608 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 90067 = 2161608 / (2 + 1 + 6 + 1 + 6 + 0 + 8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45010 + ... + 45057.

It is an arithmetic number, because the mean of its divisors is an integer number (337755).

2^2161608 is an apocalyptic number.

It is an amenable number.

2161608 is an abundant number, since it is smaller than the sum of its proper divisors (3242472).

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

2161608 is a wasteful number, since it uses less digits than its factorization.

2161608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90076 (or 90072 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 2161608 is about 1470.2407966044. The cubic root of 2161608 is about 129.2981505840.

The spelling of 2161608 in words is "two million, one hundred sixty-one thousand, six hundred eight".