68228073 has 12 divisors (see below), whose sum is σ = 100168068. Its totient is φ = 44739360.

The previous prime is 68228033. The next prime is 68228077. The reversal of 68228073 is 37082286.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 9659664 + 58568409 = 3108^2 + 7653^2 .

It is not a de Polignac number, because 68228073 - 2¹² = 68223977 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (68228077) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 61590 + ... + 62687.

It is an arithmetic number, because the mean of its divisors is an integer number (8347339).

Almost surely, 2^68228073 is an apocalyptic number.

It is an amenable number.

68228073 is a deficient number, since it is larger than the sum of its proper divisors (31939995).

68228073 is a wasteful number, since it uses less digits than its factorization.

68228073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124344 (or 124341 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 68228073 is about 8260.0286319116. The cubic root of 68228073 is about 408.6213320011.

The spelling of 68228073 in words is "sixty-eight million, two hundred twenty-eight thousand, seventy-three".