6623638 has 8 divisors (see below), whose sum is σ = 11354832. Its totient is φ = 2838696.

The previous prime is 6623611. The next prime is 6623707. The reversal of 6623638 is 8363266.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 236545 + ... + 236572.

It is an arithmetic number, because the mean of its divisors is an integer number (1419354).

Almost surely, 2^6623638 is an apocalyptic number.

6623638 is a deficient number, since it is larger than the sum of its proper divisors (4731194).

6623638 is a wasteful number, since it uses less digits than its factorization.

6623638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 473126.

The product of its digits is 31104, while the sum is 34.

The square root of 6623638 is about 2573.6429433781. The cubic root of 6623638 is about 187.8014162347.

The spelling of 6623638 in words is "six million, six hundred twenty-three thousand, six hundred thirty-eight".