6624637 has 4 divisors (see below), whose sum is σ = 6630496. Its totient is φ = 6618780.

The previous prime is 6624619. The next prime is 6624641. The reversal of 6624637 is 7364266.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6624637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6624337) 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, 633 + ... + 3694.

It is an arithmetic number, because the mean of its divisors is an integer number (1657624).

Almost surely, 2^6624637 is an apocalyptic number.

It is an amenable number.

6624637 is a deficient number, since it is larger than the sum of its proper divisors (5859).

6624637 is a wasteful number, since it uses less digits than its factorization.

6624637 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5858.

The product of its digits is 36288, while the sum is 34.

The square root of 6624637 is about 2573.8370189272. The cubic root of 6624637 is about 187.8108573799.

The spelling of 6624637 in words is "six million, six hundred twenty-four thousand, six hundred thirty-seven".