5666669 has 4 divisors (see below), whose sum is σ = 5798496. Its totient is φ = 5534844.

The previous prime is 5666641. The next prime is 5666677. The reversal of 5666669 is 9666665.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 5666669 - 2²⁰ = 4618093 is a prime.

It is a super-2 number, since 2×5666669² = 64222275111122, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5636669) 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, 65849 + ... + 65934.

It is an arithmetic number, because the mean of its divisors is an integer number (1449624).

Almost surely, 2^5666669 is an apocalyptic number.

It is an amenable number.

5666669 is a deficient number, since it is larger than the sum of its proper divisors (131827).

5666669 is a wasteful number, since it uses less digits than its factorization.

5666669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131826.

The product of its digits is 349920, while the sum is 44.

The square root of 5666669 is about 2380.4766329456. The cubic root of 5666669 is about 178.2827325115.

The spelling of 5666669 in words is "five million, six hundred sixty-six thousand, six hundred sixty-nine".