68223444 has 12 divisors (see below), whose sum is σ = 159188064. Its totient is φ = 22741144.

The previous prime is 68223439. The next prime is 68223473. The reversal of 68223444 is 44432286.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×68223444² = 9308876622442272, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2842632 + ... + 2842655.

It is an arithmetic number, because the mean of its divisors is an integer number (13265672).

Almost surely, 2^68223444 is an apocalyptic number.

It is an amenable number.

68223444 is an abundant number, since it is smaller than the sum of its proper divisors (90964620).

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

68223444 is a wasteful number, since it uses less digits than its factorization.

68223444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5685294 (or 5685292 counting only the distinct ones).

The product of its digits is 36864, while the sum is 33.

The square root of 68223444 is about 8259.7484223189. The cubic root of 68223444 is about 408.6120906882.

The spelling of 68223444 in words is "sixty-eight million, two hundred twenty-three thousand, four hundred forty-four".