2066864 has 20 divisors (see below), whose sum is σ = 4047360. Its totient is φ = 1022400.

The previous prime is 2066833. The next prime is 2066879. The reversal of 2066864 is 4686602.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 2066864.

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, 977 + ... + 2255.

It is an arithmetic number, because the mean of its divisors is an integer number (202368).

2^2066864 is an apocalyptic number.

It is an amenable number.

2066864 is a deficient number, since it is larger than the sum of its proper divisors (1980496).

2066864 is a wasteful number, since it uses less digits than its factorization.

2066864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1388 (or 1382 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 2066864 is about 1437.6592085748. The cubic root of 2066864 is about 127.3807984981.

The spelling of 2066864 in words is "two million, sixty-six thousand, eight hundred sixty-four".