3006561566 has 4 divisors (see below), whose sum is σ = 4509842352. Its totient is φ = 1503280782.

The previous prime is 3006561553. The next prime is 3006561671. The reversal of 3006561566 is 6651656003.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6651656003 = 109 ⋅61024367.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 751640390 + ... + 751640393.

It is an arithmetic number, because the mean of its divisors is an integer number (1127460588).

Almost surely, 2^3006561566 is an apocalyptic number.

3006561566 is a deficient number, since it is larger than the sum of its proper divisors (1503280786).

3006561566 is a wasteful number, since it uses less digits than its factorization.

3006561566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1503280785.

The product of its (nonzero) digits is 97200, while the sum is 38.

The square root of 3006561566 is about 54832.1216623979. The cubic root of 3006561566 is about 1443.3002952730.

The spelling of 3006561566 in words is "three billion, six million, five hundred sixty-one thousand, five hundred sixty-six".