5566068391 has 4 divisors (see below), whose sum is σ = 5994227512. Its totient is φ = 5137909272.

The previous prime is 5566068367. The next prime is 5566068451. The reversal of 5566068391 is 1938606655.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1938606655 = 5 ⋅387721331.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5566068391 is a prime.

It is a super-2 number, since 2×5566068391² = 61962234666578657762, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5566068331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 214079541 + ... + 214079566.

It is an arithmetic number, because the mean of its divisors is an integer number (1498556878).

Almost surely, 2^5566068391 is an apocalyptic number.

5566068391 is a deficient number, since it is larger than the sum of its proper divisors (428159121).

5566068391 is a wasteful number, since it uses less digits than its factorization.

5566068391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 428159120.

The product of its (nonzero) digits is 1166400, while the sum is 49.

The square root of 5566068391 is about 74606.0881630983. The cubic root of 5566068391 is about 1772.2140668431.

The spelling of 5566068391 in words is "five billion, five hundred sixty-six million, sixty-eight thousand, three hundred ninety-one".