68444080 has 80 divisors (see below), whose sum is σ = 172176480. Its totient is φ = 25214976.

The previous prime is 68444053. The next prime is 68444083. The reversal of 68444080 is 8044486.

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

It is not an unprimeable number, because it can be changed into a prime (68444083) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55632 + ... + 56848.

It is an arithmetic number, because the mean of its divisors is an integer number (2152206).

Almost surely, 2^68444080 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 68444080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86088240).

68444080 is an abundant number, since it is smaller than the sum of its proper divisors (103732400).

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

68444080 is a wasteful number, since it uses less digits than its factorization.

68444080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1286 (or 1280 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 34.

The square root of 68444080 is about 8273.0937381369. The cubic root of 68444080 is about 409.0521032850.

The spelling of 68444080 in words is "sixty-eight million, four hundred forty-four thousand, eighty".