5666599 has 2 divisors, whose sum is σ = 5666600. Its totient is φ = 5666598.

The previous prime is 5666561. The next prime is 5666621. The reversal of 5666599 is 9956665.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 5666599 - 2¹³ = 5658407 is a prime.

It is a super-3 number, since 3×5666599³ (a number of 21 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5666519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2833299 + 2833300.

It is an arithmetic number, because the mean of its divisors is an integer number (2833300).

Almost surely, 2^5666599 is an apocalyptic number.

5666599 is a deficient number, since it is larger than the sum of its proper divisors (1).

5666599 is an equidigital number, since it uses as much as digits as its factorization.

5666599 is an evil number, because the sum of its binary digits is even.

The product of its digits is 437400, while the sum is 46.

The square root of 5666599 is about 2380.4619299623. The cubic root of 5666599 is about 178.2819984034.

The spelling of 5666599 in words is "five million, six hundred sixty-six thousand, five hundred ninety-nine".