68042873 has 2 divisors, whose sum is σ = 68042874. Its totient is φ = 68042872.

The previous prime is 68042839. The next prime is 68042893. The reversal of 68042873 is 37824086.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 66373609 + 1669264 = 8147^2 + 1292^2 .

It is a cyclic number.

It is not a de Polignac number, because 68042873 - 2⁸ = 68042617 is a prime.

It is not a weakly prime, because it can be changed into another prime (68042893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34021436 + 34021437.

It is an arithmetic number, because the mean of its divisors is an integer number (34021437).

Almost surely, 2^68042873 is an apocalyptic number.

It is an amenable number.

68042873 is a deficient number, since it is larger than the sum of its proper divisors (1).

68042873 is an equidigital number, since it uses as much as digits as its factorization.

68042873 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64512, while the sum is 38.

The square root of 68042873 is about 8248.8103990818. The cubic root of 68042873 is about 408.2512729541.

The spelling of 68042873 in words is "sixty-eight million, forty-two thousand, eight hundred seventy-three".