68518856 has 48 divisors (see below), whose sum is σ = 152668800. Its totient is φ = 28732704.

The previous prime is 68518847. The next prime is 68518859. The reversal of 68518856 is 65881586.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a self number, because there is not a number n which added to its sum of digits gives 68518856.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68518859) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16565 + ... + 20283.

It is an arithmetic number, because the mean of its divisors is an integer number (3180600).

Almost surely, 2^68518856 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 68518856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76334400).

68518856 is an abundant number, since it is smaller than the sum of its proper divisors (84149944).

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

68518856 is a wasteful number, since it uses less digits than its factorization.

68518856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3786 (or 3775 counting only the distinct ones).

The product of its digits is 460800, while the sum is 47.

The square root of 68518856 is about 8277.6117328611. The cubic root of 68518856 is about 409.2010138888.

The spelling of 68518856 in words is "sixty-eight million, five hundred eighteen thousand, eight hundred fifty-six".