6587667881 has 2 divisors, whose sum is σ = 6587667882. Its totient is φ = 6587667880.

The previous prime is 6587667851. The next prime is 6587667883. The reversal of 6587667881 is 1887667856.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6336160000 + 251507881 = 79600^2 + 15859^2 .

It is a cyclic number.

It is not a de Polignac number, because 6587667881 - 2²² = 6583473577 is a prime.

It is a super-2 number, since 2×6587667881² = 86794736220718060322, which contains 22 as substring.

Together with 6587667883, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (6587667883) 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 as a sum of consecutive naturals, namely, 3293833940 + 3293833941.

It is an arithmetic number, because the mean of its divisors is an integer number (3293833941).

Almost surely, 2^6587667881 is an apocalyptic number.

It is an amenable number.

6587667881 is a deficient number, since it is larger than the sum of its proper divisors (1).

6587667881 is an equidigital number, since it uses as much as digits as its factorization.

6587667881 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27095040, while the sum is 62.

The square root of 6587667881 is about 81164.4496131157. The cubic root of 6587667881 is about 1874.6084284291.

The spelling of 6587667881 in words is "six billion, five hundred eighty-seven million, six hundred sixty-seven thousand, eight hundred eighty-one".