6631889 has 12 divisors (see below), whose sum is σ = 7609728. Its totient is φ = 5764440.

The previous prime is 6631883. The next prime is 6631901. The reversal of 6631889 is 9881366.

It is a happy number.

It is not a de Polignac number, because 6631889 - 2¹² = 6627793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6631883) 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 11 ways as a sum of consecutive naturals, for example, 1592 + ... + 3974.

It is an arithmetic number, because the mean of its divisors is an integer number (634144).

Almost surely, 2^6631889 is an apocalyptic number.

It is an amenable number.

6631889 is a deficient number, since it is larger than the sum of its proper divisors (977839).

6631889 is a wasteful number, since it uses less digits than its factorization.

6631889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2428 (or 2417 counting only the distinct ones).

The product of its digits is 62208, while the sum is 41.

The square root of 6631889 is about 2575.2454251974. The cubic root of 6631889 is about 187.8793646628.

It can be divided in two parts, 663 and 1889, that added together give a palindrome (2552).

The spelling of 6631889 in words is "six million, six hundred thirty-one thousand, eight hundred eighty-nine".