6319666889 has 4 divisors (see below), whose sum is σ = 6320926080. Its totient is φ = 6318407700.

The previous prime is 6319666883. The next prime is 6319666891. The reversal of 6319666889 is 9886669136.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6319666889 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6319666883) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 622037 + ... + 632114.

It is an arithmetic number, because the mean of its divisors is an integer number (1580231520).

Almost surely, 2^6319666889 is an apocalyptic number.

It is an amenable number.

6319666889 is a deficient number, since it is larger than the sum of its proper divisors (1259191).

6319666889 is a wasteful number, since it uses less digits than its factorization.

6319666889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1259190.

The product of its digits is 20155392, while the sum is 62.

The square root of 6319666889 is about 79496.3325506278. The cubic root of 6319666889 is about 1848.8346094895.

The spelling of 6319666889 in words is "six billion, three hundred nineteen million, six hundred sixty-six thousand, eight hundred eighty-nine".