68289156 has 120 divisors (see below), whose sum is σ = 198834944. Its totient is φ = 20295360.

The previous prime is 68289127. The next prime is 68289197. The reversal of 68289156 is 65198286.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 130311 + ... + 130833.

Almost surely, 2^68289156 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68289156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99417472).

68289156 is an abundant number, since it is smaller than the sum of its proper divisors (130545788).

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

68289156 is a wasteful number, since it uses less digits than its factorization.

68289156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 583 (or 572 counting only the distinct ones).

The product of its digits is 207360, while the sum is 45.

The square root of 68289156 is about 8263.7253100524. The cubic root of 68289156 is about 408.7432386728.

The spelling of 68289156 in words is "sixty-eight million, two hundred eighty-nine thousand, one hundred fifty-six".