6693138 has 64 divisors (see below), whose sum is σ = 16485120. Its totient is φ = 2002176.

The previous prime is 6693133. The next prime is 6693143. The reversal of 6693138 is 8313966.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (6693133) and next prime (6693143).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6693133) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20956 + ... + 21272.

It is an arithmetic number, because the mean of its divisors is an integer number (257580).

Almost surely, 2^6693138 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6693138, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8242560).

6693138 is an abundant number, since it is smaller than the sum of its proper divisors (9791982).

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

6693138 is a wasteful number, since it uses less digits than its factorization.

6693138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368 (or 362 counting only the distinct ones).

The product of its digits is 23328, while the sum is 36.

The square root of 6693138 is about 2587.1099706043. The cubic root of 6693138 is about 188.4559815788.

The spelling of 6693138 in words is "six million, six hundred ninety-three thousand, one hundred thirty-eight".