5666245647 has 4 divisors (see below), whose sum is σ = 7554994200. Its totient is φ = 3777497096.

The previous prime is 5666245643. The next prime is 5666245657. The reversal of 5666245647 is 7465426665.

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 5666245647 - 2² = 5666245643 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 5666245647.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5666245643) 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, 944374272 + ... + 944374277.

It is an arithmetic number, because the mean of its divisors is an integer number (1888748550).

Almost surely, 2^5666245647 is an apocalyptic number.

5666245647 is a deficient number, since it is larger than the sum of its proper divisors (1888748553).

5666245647 is a wasteful number, since it uses less digits than its factorization.

5666245647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1888748552.

The product of its digits is 7257600, while the sum is 51.

The square root of 5666245647 is about 75274.4687593343. The cubic root of 5666245647 is about 1782.7829260688.

The spelling of 5666245647 in words is "five billion, six hundred sixty-six million, two hundred forty-five thousand, six hundred forty-seven".