2166147 has 12 divisors (see below), whose sum is σ = 3161184. Its totient is φ = 1429200.

The previous prime is 2166137. The next prime is 2166161. The reversal of 2166147 is 7416612.

It is not a de Polignac number, because 2166147 - 2¹⁵ = 2133379 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2166147.

It is not an unprimeable number, because it can be changed into a prime (2166127) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 283 + ... + 2100.

It is an arithmetic number, because the mean of its divisors is an integer number (263432).

2^2166147 is an apocalyptic number.

2166147 is a deficient number, since it is larger than the sum of its proper divisors (995037).

2166147 is a wasteful number, since it uses less digits than its factorization.

2166147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2490 (or 2487 counting only the distinct ones).

The product of its digits is 2016, while the sum is 27.

The square root of 2166147 is about 1471.7836118126. The cubic root of 2166147 is about 129.3885885048.

The spelling of 2166147 in words is "two million, one hundred sixty-six thousand, one hundred forty-seven".