5666699 has 4 divisors (see below), whose sum is σ = 5671464. Its totient is φ = 5661936.

The previous prime is 5666681. The next prime is 5666701. The reversal of 5666699 is 9966665.

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.

It is a cyclic number.

It is not a de Polignac number, because 5666699 - 2⁸ = 5666443 is a prime.

It is a super-2 number, since 2×5666699² = 64222955113202, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 10 and base 16.

It is not an unprimeable number, because it can be changed into a prime (5666599) 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, 1064 + ... + 3530.

It is an arithmetic number, because the mean of its divisors is an integer number (1417866).

Almost surely, 2^5666699 is an apocalyptic number.

5666699 is a deficient number, since it is larger than the sum of its proper divisors (4765).

5666699 is a wasteful number, since it uses less digits than its factorization.

5666699 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4764.

The product of its digits is 524880, while the sum is 47.

The square root of 5666699 is about 2380.4829341963. The cubic root of 5666699 is about 178.2830471274.

It can be divided in two parts, 56666 and 99, that added together give a palindrome (56765).

The spelling of 5666699 in words is "five million, six hundred sixty-six thousand, six hundred ninety-nine".