6664724889 has 16 divisors (see below), whose sum is σ = 8948134080. Its totient is φ = 4412266560.

The previous prime is 6664724887. The next prime is 6664724893. The reversal of 6664724889 is 9884274666.

It is not a de Polignac number, because 6664724889 - 2¹ = 6664724887 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6664724887) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1132647 + ... + 1138515.

It is an arithmetic number, because the mean of its divisors is an integer number (559258380).

Almost surely, 2^6664724889 is an apocalyptic number.

It is an amenable number.

6664724889 is a deficient number, since it is larger than the sum of its proper divisors (2283409191).

6664724889 is a wasteful number, since it uses less digits than its factorization.

6664724889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8440.

The product of its digits is 27869184, while the sum is 60.

The square root of 6664724889 is about 81637.7663155969. The cubic root of 6664724889 is about 1881.8893117439.

The spelling of 6664724889 in words is "six billion, six hundred sixty-four million, seven hundred twenty-four thousand, eight hundred eighty-nine".