5566999 has 4 divisors (see below), whose sum is σ = 5571720. Its totient is φ = 5562280.

The previous prime is 5566997. The next prime is 5567033. The reversal of 5566999 is 9996655.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 9996655 = 5 ⋅1999331.

It is a cyclic number.

It is not a de Polignac number, because 5566999 - 2¹ = 5566997 is a prime.

It is a Duffinian number.

5566999 is a lucky number.

It is a plaindrome in base 10.

It is a zygodrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5566991) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1104 + ... + 3514.

It is an arithmetic number, because the mean of its divisors is an integer number (1392930).

Almost surely, 2^5566999 is an apocalyptic number.

5566999 is a deficient number, since it is larger than the sum of its proper divisors (4721).

5566999 is a wasteful number, since it uses less digits than its factorization.

5566999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4720.

The product of its digits is 656100, while the sum is 49.

The square root of 5566999 is about 2359.4488763268. The cubic root of 5566999 is about 177.2312828742.

The spelling of 5566999 in words is "five million, five hundred sixty-six thousand, nine hundred ninety-nine".