68668273 has 2 divisors, whose sum is σ = 68668274. Its totient is φ = 68668272.

The previous prime is 68668241. The next prime is 68668277. The reversal of 68668273 is 37286686.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67519089 + 1149184 = 8217^2 + 1072^2 .

It is a cyclic number.

It is not a de Polignac number, because 68668273 - 2⁵ = 68668241 is a prime.

It is not a weakly prime, because it can be changed into another prime (68668277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34334136 + 34334137.

It is an arithmetic number, because the mean of its divisors is an integer number (34334137).

Almost surely, 2^68668273 is an apocalyptic number.

It is an amenable number.

68668273 is a deficient number, since it is larger than the sum of its proper divisors (1).

68668273 is an equidigital number, since it uses as much as digits as its factorization.

68668273 is an evil number, because the sum of its binary digits is even.

The product of its digits is 580608, while the sum is 46.

The square root of 68668273 is about 8286.6321868416. The cubic root of 68668273 is about 409.4982420389.

The spelling of 68668273 in words is "sixty-eight million, six hundred sixty-eight thousand, two hundred seventy-three".