68104520 has 64 divisors (see below), whose sum is σ = 172592640. Its totient is φ = 23961600.

The previous prime is 68104513. The next prime is 68104577. The reversal of 68104520 is 2540186.

It is a self number, because there is not a number n which added to its sum of digits gives 68104520.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11144 + ... + 16136.

It is an arithmetic number, because the mean of its divisors is an integer number (2696760).

Almost surely, 2^68104520 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 68104520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86296320).

68104520 is an abundant number, since it is smaller than the sum of its proper divisors (104488120).

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

68104520 is a wasteful number, since it uses less digits than its factorization.

68104520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5046 (or 5042 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 68104520 is about 8252.5462737267. The cubic root of 68104520 is about 408.3745279371.

The spelling of 68104520 in words is "sixty-eight million, one hundred four thousand, five hundred twenty".