5666289 has 4 divisors (see below), whose sum is σ = 7555056. Its totient is φ = 3777524.

The previous prime is 5666279. The next prime is 5666317. The reversal of 5666289 is 9826665.

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 5666289 - 2¹³ = 5658097 is a prime.

It is a D-number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 5666289.

It is not an unprimeable number, because it can be changed into a prime (5666209) 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, 944379 + ... + 944384.

It is an arithmetic number, because the mean of its divisors is an integer number (1888764).

Almost surely, 2^5666289 is an apocalyptic number.

It is an amenable number.

5666289 is a deficient number, since it is larger than the sum of its proper divisors (1888767).

5666289 is a wasteful number, since it uses less digits than its factorization.

5666289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1888766.

The product of its digits is 155520, while the sum is 42.

The square root of 5666289 is about 2380.3968156591. The cubic root of 5666289 is about 178.2787472806.

The spelling of 5666289 in words is "five million, six hundred sixty-six thousand, two hundred eighty-nine".