2164986 has 12 divisors (see below), whose sum is σ = 4690842. Its totient is φ = 721656.

The previous prime is 2164979. The next prime is 2164991. The reversal of 2164986 is 6894612.

2164986 is a `hidden beast` number, since 2 + 1 + 649 + 8 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 2117025 + 47961 = 1455^2 + 219^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2164986.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 60121 + ... + 60156.

2^2164986 is an apocalyptic number.

2164986 is an abundant number, since it is smaller than the sum of its proper divisors (2525856).

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

2164986 is a wasteful number, since it uses less digits than its factorization.

2164986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120285 (or 120282 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 2164986 is about 1471.3891395549. The cubic root of 2164986 is about 129.3654680368.

The spelling of 2164986 in words is "two million, one hundred sixty-four thousand, nine hundred eighty-six".