3566663 has 4 divisors (see below), whose sum is σ = 3570720. Its totient is φ = 3562608.

The previous prime is 3566659. The next prime is 3566669. The reversal of 3566663 is 3666653.

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 3566663 - 2² = 3566659 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3566669) 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, 95 + ... + 2672.

It is an arithmetic number, because the mean of its divisors is an integer number (892680).

Almost surely, 2^3566663 is an apocalyptic number.

3566663 is a deficient number, since it is larger than the sum of its proper divisors (4057).

3566663 is a wasteful number, since it uses less digits than its factorization.

3566663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4056.

The product of its digits is 58320, while the sum is 35.

The square root of 3566663 is about 1888.5610924723. The cubic root of 3566663 is about 152.7873360803.

The spelling of 3566663 in words is "three million, five hundred sixty-six thousand, six hundred sixty-three".