68885658 has 48 divisors (see below), whose sum is σ = 157876992. Its totient is φ = 21672000.

The previous prime is 68885657. The next prime is 68885723. The reversal of 68885658 is 85658886.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (68885651) 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, 21373 + ... + 24383.

It is an arithmetic number, because the mean of its divisors is an integer number (3289104).

Almost surely, 2^68885658 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68885658, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78938496).

68885658 is an abundant number, since it is smaller than the sum of its proper divisors (88991334).

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

68885658 is a wasteful number, since it uses less digits than its factorization.

68885658 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3091 (or 3088 counting only the distinct ones).

The product of its digits is 3686400, while the sum is 54.

The square root of 68885658 is about 8299.7384296133. The cubic root of 68885658 is about 409.9299067168.

The spelling of 68885658 in words is "sixty-eight million, eight hundred eighty-five thousand, six hundred fifty-eight".