2166827 has 4 divisors (see below), whose sum is σ = 2333520. Its totient is φ = 2000136.

The previous prime is 2166821. The next prime is 2166833. The reversal of 2166827 is 7286612.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (2166821) and next prime (2166833).

It is a cyclic number.

It is not a de Polignac number, because 2166827 - 2⁶ = 2166763 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2166793 and 2166802.

It is not an unprimeable number, because it can be changed into a prime (2166821) by changing a digit.

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, 83327 + ... + 83352.

It is an arithmetic number, because the mean of its divisors is an integer number (583380).

2^2166827 is an apocalyptic number.

2166827 is a deficient number, since it is larger than the sum of its proper divisors (166693).

2166827 is a wasteful number, since it uses less digits than its factorization.

2166827 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166692.

The product of its digits is 8064, while the sum is 32.

The square root of 2166827 is about 1472.0146059058. The cubic root of 2166827 is about 129.4021263726.

The spelling of 2166827 in words is "two million, one hundred sixty-six thousand, eight hundred twenty-seven".