6638173 has 4 divisors (see below), whose sum is σ = 6700320. Its totient is φ = 6576028.

The previous prime is 6638167. The next prime is 6638179. The reversal of 6638173 is 3718366.

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.

It is an interprime number because it is at equal distance from previous prime (6638167) and next prime (6638179).

It is a cyclic number.

It is not a de Polignac number, because 6638173 - 2⁵ = 6638141 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 (6638179) 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, 30913 + ... + 31126.

It is an arithmetic number, because the mean of its divisors is an integer number (1675080).

Almost surely, 2^6638173 is an apocalyptic number.

It is an amenable number.

6638173 is a deficient number, since it is larger than the sum of its proper divisors (62147).

6638173 is a wasteful number, since it uses less digits than its factorization.

6638173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62146.

The product of its digits is 18144, while the sum is 34.

The square root of 6638173 is about 2576.4652142034. The cubic root of 6638173 is about 187.9386871888.

It can be divided in two parts, 663 and 8173, that added together give a square (8836 = 94²).

The spelling of 6638173 in words is "six million, six hundred thirty-eight thousand, one hundred seventy-three".