68686000 has 80 divisors (see below), whose sum is σ = 169105248. Its totient is φ = 26976000.

The previous prime is 68685989. The next prime is 68686019. The reversal of 68686000 is 68686.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 121719 + ... + 122281.

Almost surely, 2^68686000 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 68686000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84552624).

68686000 is an abundant number, since it is smaller than the sum of its proper divisors (100419248).

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

68686000 is a wasteful number, since it uses less digits than its factorization.

68686000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 647 (or 631 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 68686000 is about 8287.7017320847. The cubic root of 68686000 is about 409.5334768980.

68686000 divided by its reverse (68686) gives a cube (1000 = 10³).

The spelling of 68686000 in words is "sixty-eight million, six hundred eighty-six thousand".