6671889 has 45 divisors (see below), whose sum is σ = 11883531. Its totient is φ = 3719520.

The previous prime is 6671881. The next prime is 6671891. The reversal of 6671889 is 9881766.

It is a happy number.

The square root of 6671889 is 2583.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 321489 + 6350400 = 567^2 + 2520^2 .

It is not a de Polignac number, because 6671889 - 2³ = 6671881 is a prime.

Its product of digits (145152) is a multiple of the sum of its prime factors (108).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6671881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 162709 + ... + 162749.

Almost surely, 2^6671889 is an apocalyptic number.

6671889 is the 2583-rd square number.

6671889 is the 1292-nd centered octagonal number.

It is an amenable number.

6671889 is a deficient number, since it is larger than the sum of its proper divisors (5211642).

6671889 is an equidigital number, since it uses as much as digits as its factorization.

6671889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108 (or 51 counting only the distinct ones).

The product of its digits is 145152, while the sum is 45.

The cubic root of 6671889 is about 188.2563369877.

It can be divided in two parts, 667 and 1889, that added together give a triangular number (2556 = T₇₁).

The spelling of 6671889 in words is "six million, six hundred seventy-one thousand, eight hundred eighty-nine".