6639103 has 4 divisors (see below), whose sum is σ = 6652368. Its totient is φ = 6625840.

The previous prime is 6639077. The next prime is 6639107. The reversal of 6639103 is 3019366.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6639103 - 2⁹ = 6638591 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 (6639107) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5851 + ... + 6892.

It is an arithmetic number, because the mean of its divisors is an integer number (1663092).

Almost surely, 2^6639103 is an apocalyptic number.

6639103 is a deficient number, since it is larger than the sum of its proper divisors (13265).

6639103 is a wasteful number, since it uses less digits than its factorization.

6639103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13264.

The product of its (nonzero) digits is 2916, while the sum is 28.

The square root of 6639103 is about 2576.6456877111. The cubic root of 6639103 is about 187.9474634398.

The spelling of 6639103 in words is "six million, six hundred thirty-nine thousand, one hundred three".