68444036 has 6 divisors (see below), whose sum is σ = 119777070. Its totient is φ = 34222016.

The previous prime is 68444027. The next prime is 68444053. The reversal of 68444036 is 63044486.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 49084036 + 19360000 = 7006^2 + 4400^2 .

It is a junction number, because it is equal to n+sod(n) for n = 68443987 and 68444005.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8555501 + ... + 8555508.

It is an arithmetic number, because the mean of its divisors is an integer number (19962845).

Almost surely, 2^68444036 is an apocalyptic number.

It is an amenable number.

68444036 is a deficient number, since it is larger than the sum of its proper divisors (51333034).

68444036 is a wasteful number, since it uses less digits than its factorization.

68444036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17111013 (or 17111011 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 35.

The square root of 68444036 is about 8273.0910789136. The cubic root of 68444036 is about 409.0520156305.

The spelling of 68444036 in words is "sixty-eight million, four hundred forty-four thousand, thirty-six".