5665511667 has 4 divisors (see below), whose sum is σ = 7554015560. Its totient is φ = 3777007776.

The previous prime is 5665511641. The next prime is 5665511693. The reversal of 5665511667 is 7661155665.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (5665511641) and next prime (5665511693).

It is a de Polignac number, because none of the positive numbers 2^k-5665511667 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5665511867) 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, 944251942 + ... + 944251947.

It is an arithmetic number, because the mean of its divisors is an integer number (1888503890).

Almost surely, 2^5665511667 is an apocalyptic number.

5665511667 is a deficient number, since it is larger than the sum of its proper divisors (1888503893).

5665511667 is a wasteful number, since it uses less digits than its factorization.

5665511667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1888503892.

The product of its digits is 1134000, while the sum is 48.

The square root of 5665511667 is about 75269.5932432214. The cubic root of 5665511667 is about 1782.7059448483.

The spelling of 5665511667 in words is "five billion, six hundred sixty-five million, five hundred eleven thousand, six hundred sixty-seven".