68445044 has 12 divisors (see below), whose sum is σ = 119977284. Its totient is φ = 34165824.

The previous prime is 68445029. The next prime is 68445053. The reversal of 68445044 is 44054486.

It can be written as a sum of positive squares in 2 ways, for example, as 6822544 + 61622500 = 2612^2 + 7850^2 .

It is a junction number, because it is equal to n+sod(n) for n = 68444995 and 68445013.

It is a congruent number.

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 in 3 ways as a sum of consecutive naturals, for example, 11399 + ... + 16334.

It is an arithmetic number, because the mean of its divisors is an integer number (9998107).

Almost surely, 2^68445044 is an apocalyptic number.

It is an amenable number.

68445044 is a deficient number, since it is larger than the sum of its proper divisors (51532240).

68445044 is a wasteful number, since it uses less digits than its factorization.

68445044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28354 (or 28352 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 35.

The square root of 68445044 is about 8273.1519990872. The cubic root of 68445044 is about 409.0540237062.

The spelling of 68445044 in words is "sixty-eight million, four hundred forty-five thousand, forty-four".