6669873655 has 8 divisors (see below), whose sum is σ = 8004531600. Its totient is φ = 5335443456.

The previous prime is 6669873643. The next prime is 6669873667. The reversal of 6669873655 is 5563789666.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (6669873643) and next prime (6669873667).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6669873655 - 2²¹ = 6667776503 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6669873593 and 6669873602.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15991 + ... + 116599.

It is an arithmetic number, because the mean of its divisors is an integer number (1000566450).

Almost surely, 2^6669873655 is an apocalyptic number.

6669873655 is a deficient number, since it is larger than the sum of its proper divisors (1334657945).

6669873655 is a wasteful number, since it uses less digits than its factorization.

6669873655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113873.

The product of its digits is 48988800, while the sum is 61.

The square root of 6669873655 is about 81669.2944441177. The cubic root of 6669873655 is about 1882.3737985399.

The spelling of 6669873655 in words is "six billion, six hundred sixty-nine million, eight hundred seventy-three thousand, six hundred fifty-five".