6665366258 has 16 divisors (see below), whose sum is σ = 10412898624. Its totient is φ = 3196937520.

The previous prime is 6665366243. The next prime is 6665366263. The reversal of 6665366258 is 8526635666.

It is a Curzon number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 629060 + ... + 639567.

It is an arithmetic number, because the mean of its divisors is an integer number (650806164).

Almost surely, 2^6665366258 is an apocalyptic number.

6665366258 is a deficient number, since it is larger than the sum of its proper divisors (3747532366).

6665366258 is a wasteful number, since it uses less digits than its factorization.

6665366258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1268737.

The product of its digits is 9331200, while the sum is 53.

The square root of 6665366258 is about 81641.6943601736. The cubic root of 6665366258 is about 1881.9496766637.

The spelling of 6665366258 in words is "six billion, six hundred sixty-five million, three hundred sixty-six thousand, two hundred fifty-eight".