2166064 has 20 divisors (see below), whose sum is σ = 4219720. Its totient is φ = 1077120.

The previous prime is 2166053. The next prime is 2166077. The reversal of 2166064 is 4606612.

It is a happy number.

It is a super-3 number, since 3×2166064³ = 30488433304104210432, which contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5092 + ... + 5500.

It is an arithmetic number, because the mean of its divisors is an integer number (210986).

2^2166064 is an apocalyptic number.

It is an amenable number.

2166064 is a deficient number, since it is larger than the sum of its proper divisors (2053656).

2166064 is a wasteful number, since it uses less digits than its factorization.

2166064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 748 (or 742 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 2166064 is about 1471.7554144626. The cubic root of 2166064 is about 129.3869358946.

The spelling of 2166064 in words is "two million, one hundred sixty-six thousand, sixty-four".