68444388 has 36 divisors (see below), whose sum is σ = 173484220. Its totient is φ = 22752576.

The previous prime is 68444377. The next prime is 68444393. The reversal of 68444388 is 88344486.

It can be written as a sum of positive squares in 2 ways, for example, as 22638564 + 45805824 = 4758^2 + 6768^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11898 + ... + 16686.

Almost surely, 2^68444388 is an apocalyptic number.

It is an amenable number.

68444388 is an abundant number, since it is smaller than the sum of its proper divisors (105039832).

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

68444388 is a wasteful number, since it uses less digits than its factorization.

68444388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5196 (or 5191 counting only the distinct ones).

The product of its digits is 589824, while the sum is 45.

The square root of 68444388 is about 8273.1123526760. The cubic root of 68444388 is about 409.0527168655.

The spelling of 68444388 in words is "sixty-eight million, four hundred forty-four thousand, three hundred eighty-eight".