3566042661 has 4 divisors (see below), whose sum is σ = 4754723552. Its totient is φ = 2377361772.

The previous prime is 3566042629. The next prime is 3566042677. The reversal of 3566042661 is 1662406653.

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 not a de Polignac number, because 3566042661 - 2⁵ = 3566042629 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 (3566042611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 594340441 + ... + 594340446.

It is an arithmetic number, because the mean of its divisors is an integer number (1188680888).

Almost surely, 2^3566042661 is an apocalyptic number.

It is an amenable number.

3566042661 is a deficient number, since it is larger than the sum of its proper divisors (1188680891).

3566042661 is a wasteful number, since it uses less digits than its factorization.

3566042661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1188680890.

The product of its (nonzero) digits is 155520, while the sum is 39.

The square root of 3566042661 is about 59716.3517053746. The cubic root of 3566042661 is about 1527.7847761896.

The spelling of 3566042661 in words is "three billion, five hundred sixty-six million, forty-two thousand, six hundred sixty-one".