6667788859 has 2 divisors, whose sum is σ = 6667788860. Its totient is φ = 6667788858.

The previous prime is 6667788857. The next prime is 6667788899. The reversal of 6667788859 is 9588877666.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6667788859 - 2¹ = 6667788857 is a prime.

Together with 6667788857, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (6667788857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3333894429 + 3333894430.

It is an arithmetic number, because the mean of its divisors is an integer number (3333894430).

Almost surely, 2^6667788859 is an apocalyptic number.

6667788859 is a deficient number, since it is larger than the sum of its proper divisors (1).

6667788859 is an equidigital number, since it uses as much as digits as its factorization.

6667788859 is an evil number, because the sum of its binary digits is even.

The product of its digits is 243855360, while the sum is 70.

The square root of 6667788859 is about 81656.5298001329. The cubic root of 6667788859 is about 1882.1776541790.

The spelling of 6667788859 in words is "six billion, six hundred sixty-seven million, seven hundred eighty-eight thousand, eight hundred fifty-nine".