6672138 has 32 divisors (see below), whose sum is σ = 14902272. Its totient is φ = 1974000.

The previous prime is 6672137. The next prime is 6672157. The reversal of 6672138 is 8312766.

6672138 is nontrivially palindromic in base 5.

6672138 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 6672099 and 6672108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6672137) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1663 + ... + 4013.

It is an arithmetic number, because the mean of its divisors is an integer number (465696).

Almost surely, 2^6672138 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6672138, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7451136).

6672138 is an abundant number, since it is smaller than the sum of its proper divisors (8230134).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6672138 is a wasteful number, since it uses less digits than its factorization.

6672138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2410.

The product of its digits is 12096, while the sum is 33.

The square root of 6672138 is about 2583.0481993180. The cubic root of 6672138 is about 188.2586789154.

The spelling of 6672138 in words is "six million, six hundred seventy-two thousand, one hundred thirty-eight".