3668559 has 4 divisors (see below), whose sum is σ = 4891416. Its totient is φ = 2445704.

The previous prime is 3668543. The next prime is 3668563. The reversal of 3668559 is 9558663.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3668559 - 2⁴ = 3668543 is a prime.

It is a D-number.

It is a self number, because there is not a number n which added to its sum of digits gives 3668559.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3668579) 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, 611424 + ... + 611429.

It is an arithmetic number, because the mean of its divisors is an integer number (1222854).

Almost surely, 2^3668559 is an apocalyptic number.

3668559 is a deficient number, since it is larger than the sum of its proper divisors (1222857).

3668559 is a wasteful number, since it uses less digits than its factorization.

3668559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1222856.

The product of its digits is 194400, while the sum is 42.

The square root of 3668559 is about 1915.3482712029. The cubic root of 3668559 is about 154.2286898561.

The spelling of 3668559 in words is "three million, six hundred sixty-eight thousand, five hundred fifty-nine".