6623687 has 16 divisors (see below), whose sum is σ = 7964160. Its totient is φ = 5388768.

The previous prime is 6623611. The next prime is 6623707. The reversal of 6623687 is 7863266.

It is not a de Polignac number, because 6623687 - 2¹⁰ = 6622663 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6623687.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6623087) 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 15 ways as a sum of consecutive naturals, for example, 13358 + ... + 13844.

It is an arithmetic number, because the mean of its divisors is an integer number (497760).

Almost surely, 2^6623687 is an apocalyptic number.

6623687 is a gapful number since it is divisible by the number (67) formed by its first and last digit.

6623687 is a deficient number, since it is larger than the sum of its proper divisors (1340473).

6623687 is a wasteful number, since it uses less digits than its factorization.

6623687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 590.

The product of its digits is 72576, while the sum is 38.

The square root of 6623687 is about 2573.6524629406. The cubic root of 6623687 is about 187.8018793361.

The spelling of 6623687 in words is "six million, six hundred twenty-three thousand, six hundred eighty-seven".