3566669 has 2 divisors, whose sum is σ = 3566670. Its totient is φ = 3566668.

The previous prime is 3566659. The next prime is 3566687. The reversal of 3566669 is 9666653.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1974025 + 1592644 = 1405^2 + 1262^2 .

It is a cyclic number.

It is not a de Polignac number, because 3566669 - 2²⁰ = 2518093 is a prime.

It is a super-2 number, since 2×3566669² = 25442255511122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a plaindrome in base 10.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3566659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1783334 + 1783335.

It is an arithmetic number, because the mean of its divisors is an integer number (1783335).

Almost surely, 2^3566669 is an apocalyptic number.

It is an amenable number.

3566669 is a deficient number, since it is larger than the sum of its proper divisors (1).

3566669 is an equidigital number, since it uses as much as digits as its factorization.

3566669 is an evil number, because the sum of its binary digits is even.

The product of its digits is 174960, while the sum is 41.

The square root of 3566669 is about 1888.5626809826. The cubic root of 3566669 is about 152.7874217555.

The spelling of 3566669 in words is "three million, five hundred sixty-six thousand, six hundred sixty-nine".