68133186 has 48 divisors (see below), whose sum is σ = 162684288. Its totient is φ = 20436000.

The previous prime is 68133181. The next prime is 68133187.

68133186 is nontrivially palindromic in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 68133186.

It is not an unprimeable number, because it can be changed into a prime (68133181) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18295 + ... + 21701.

It is an arithmetic number, because the mean of its divisors is an integer number (3389256).

Almost surely, 2^68133186 is an apocalyptic number.

68133186 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 68133186, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81342144).

68133186 is an abundant number, since it is smaller than the sum of its proper divisors (94551102).

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

68133186 is a wasteful number, since it uses less digits than its factorization.

68133186 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3527 (or 3524 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 68133186 is about 8254.2828882950. The cubic root of 68133186 is about 408.4318164603.

It can be divided in two parts, 6813 and 3186, that added together give a palindrome (9999).

The spelling of 68133186 in words is "sixty-eight million, one hundred thirty-three thousand, one hundred eighty-six".