68865444 has 72 divisors (see below), whose sum is σ = 182773920. Its totient is φ = 22422816.

The previous prime is 68865439. The next prime is 68865451. The reversal of 68865444 is 44456886.

It is a self number, because there is not a number n which added to its sum of digits gives 68865444.

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, 303259 + ... + 303485.

Almost surely, 2^68865444 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 68865444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91386960).

68865444 is an abundant number, since it is smaller than the sum of its proper divisors (113908476).

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

68865444 is a wasteful number, since it uses less digits than its factorization.

68865444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346 (or 285 counting only the distinct ones).

The product of its digits is 737280, while the sum is 45.

The square root of 68865444 is about 8298.5205910451. The cubic root of 68865444 is about 409.8898058016.

The spelling of 68865444 in words is "sixty-eight million, eight hundred sixty-five thousand, four hundred forty-four".