6634887 has 16 divisors (see below), whose sum is σ = 10187520. Its totient is φ = 3762432.

The previous prime is 6634871. The next prime is 6634889. The reversal of 6634887 is 7884366.

It is not a de Polignac number, because 6634887 - 2⁴ = 6634871 is a prime.

6634887 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6634889) 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 15 ways as a sum of consecutive naturals, for example, 1783 + ... + 4055.

It is an arithmetic number, because the mean of its divisors is an integer number (636720).

Almost surely, 2^6634887 is an apocalyptic number.

6634887 is a deficient number, since it is larger than the sum of its proper divisors (3552633).

6634887 is a wasteful number, since it uses less digits than its factorization.

6634887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2422.

The product of its digits is 193536, while the sum is 42.

The square root of 6634887 is about 2575.8274398725. The cubic root of 6634887 is about 187.9076712022.

The spelling of 6634887 in words is "six million, six hundred thirty-four thousand, eight hundred eighty-seven".