5666851 has 4 divisors (see below), whose sum is σ = 5675832. Its totient is φ = 5657872.

The previous prime is 5666849. The next prime is 5666873. The reversal of 5666851 is 1586665.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1586665 = 5 ⋅317333.

It is a cyclic number.

It is not a de Polignac number, because 5666851 - 2¹ = 5666849 is a prime.

It is a super-2 number, since 2×5666851² = 64226400512402, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 5666851.

It is not an unprimeable number, because it can be changed into a prime (5666821) by changing a digit.

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, 3466 + ... + 4831.

It is an arithmetic number, because the mean of its divisors is an integer number (1418958).

Almost surely, 2^5666851 is an apocalyptic number.

5666851 is a deficient number, since it is larger than the sum of its proper divisors (8981).

5666851 is an equidigital number, since it uses as much as digits as its factorization.

5666851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8980.

The product of its digits is 43200, while the sum is 37.

The square root of 5666851 is about 2380.5148602771. The cubic root of 5666851 is about 178.2846411642.

The spelling of 5666851 in words is "five million, six hundred sixty-six thousand, eight hundred fifty-one".