68890986 has 48 divisors (see below), whose sum is σ = 155719200. Its totient is φ = 22826448.

The previous prime is 68890967. The next prime is 68890999. The reversal of 68890986 is 68909886.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 110985 + ... + 111603.

It is an arithmetic number, because the mean of its divisors is an integer number (3244150).

Almost surely, 2^68890986 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68890986, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77859600).

68890986 is an abundant number, since it is smaller than the sum of its proper divisors (86828214).

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

68890986 is a wasteful number, since it uses less digits than its factorization.

68890986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 865 (or 853 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 54.

The square root of 68890986 is about 8300.0593973778. The cubic root of 68890986 is about 409.9404751974.

The spelling of 68890986 in words is "sixty-eight million, eight hundred ninety thousand, nine hundred eighty-six".