6670549889 has 4 divisors (see below), whose sum is σ = 6670720980. Its totient is φ = 6670378800.

The previous prime is 6670549867. The next prime is 6670549901. The reversal of 6670549889 is 9889450766.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5521678864 + 1148871025 = 74308^2 + 33895^2 .

It is a cyclic number.

It is not a de Polignac number, because 6670549889 - 2¹² = 6670545793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6670549819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4607 + ... + 115595.

It is an arithmetic number, because the mean of its divisors is an integer number (1667680245).

Almost surely, 2^6670549889 is an apocalyptic number.

It is an amenable number.

6670549889 is a deficient number, since it is larger than the sum of its proper divisors (171091).

6670549889 is a wasteful number, since it uses less digits than its factorization.

6670549889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171090.

The product of its (nonzero) digits is 26127360, while the sum is 62.

The square root of 6670549889 is about 81673.4344141349. The cubic root of 6670549889 is about 1882.4374120460.

The spelling of 6670549889 in words is "six billion, six hundred seventy million, five hundred forty-nine thousand, eight hundred eighty-nine".