6723138 has 16 divisors (see below), whose sum is σ = 13546080. Its totient is φ = 2224416.

The previous prime is 6723127. The next prime is 6723163. The reversal of 6723138 is 8313276.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3268 + ... + 4911.

It is an arithmetic number, because the mean of its divisors is an integer number (846630).

Almost surely, 2^6723138 is an apocalyptic number.

6723138 is an abundant number, since it is smaller than the sum of its proper divisors (6822942).

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

6723138 is a wasteful number, since it uses less digits than its factorization.

6723138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8321.

The product of its digits is 6048, while the sum is 30.

The square root of 6723138 is about 2592.9014636118. The cubic root of 6723138 is about 188.7371279031.

The spelling of 6723138 in words is "six million, seven hundred twenty-three thousand, one hundred thirty-eight".