6605358887 has 2 divisors, whose sum is σ = 6605358888. Its totient is φ = 6605358886.

The previous prime is 6605358869. The next prime is 6605358899. The reversal of 6605358887 is 7888535066.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6605358887 - 2⁸ = 6605358631 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6605358847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3302679443 + 3302679444.

It is an arithmetic number, because the mean of its divisors is an integer number (3302679444).

Almost surely, 2^6605358887 is an apocalyptic number.

6605358887 is a deficient number, since it is larger than the sum of its proper divisors (1).

6605358887 is an equidigital number, since it uses as much as digits as its factorization.

6605358887 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9676800, while the sum is 56.

The square root of 6605358887 is about 81273.3590237293. The cubic root of 6605358887 is about 1876.2849988034.

The spelling of 6605358887 in words is "six billion, six hundred five million, three hundred fifty-eight thousand, eight hundred eighty-seven".