6665716267 has 4 divisors (see below), whose sum is σ = 7617961456. Its totient is φ = 5713471080.

The previous prime is 6665716171. The next prime is 6665716271. The reversal of 6665716267 is 7626175666.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6665716267 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6665713267) 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, 476122584 + ... + 476122597.

It is an arithmetic number, because the mean of its divisors is an integer number (1904490364).

Almost surely, 2^6665716267 is an apocalyptic number.

6665716267 is a deficient number, since it is larger than the sum of its proper divisors (952245189).

6665716267 is an equidigital number, since it uses as much as digits as its factorization.

6665716267 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 952245188.

The product of its digits is 3810240, while the sum is 52.

The square root of 6665716267 is about 81643.8378997460. The cubic root of 6665716267 is about 1881.9826174789.

The spelling of 6665716267 in words is "six billion, six hundred sixty-five million, seven hundred sixteen thousand, two hundred sixty-seven".