68071673 has 4 divisors (see below), whose sum is σ = 68172900. Its totient is φ = 67970448.

The previous prime is 68071667. The next prime is 68071681. The reversal of 68071673 is 37617086.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 51652969 + 16418704 = 7187^2 + 4052^2 .

It is a cyclic number.

It is not a de Polignac number, because 68071673 - 2⁶ = 68071609 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (68071643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49598 + ... + 50951.

It is an arithmetic number, because the mean of its divisors is an integer number (17043225).

Almost surely, 2^68071673 is an apocalyptic number.

It is an amenable number.

68071673 is a deficient number, since it is larger than the sum of its proper divisors (101227).

68071673 is a wasteful number, since it uses less digits than its factorization.

68071673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101226.

The product of its (nonzero) digits is 42336, while the sum is 38.

The square root of 68071673 is about 8250.5559206638. Note that the first 3 decimals coincide. The cubic root of 68071673 is about 408.3088639879.

The spelling of 68071673 in words is "sixty-eight million, seventy-one thousand, six hundred seventy-three".