68478233 has 2 divisors, whose sum is σ = 68478234. Its totient is φ = 68478232.

The previous prime is 68478203. The next prime is 68478239. The reversal of 68478233 is 33287486.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46076944 + 22401289 = 6788^2 + 4733^2 .

It is a cyclic number.

It is not a de Polignac number, because 68478233 - 2²⁰ = 67429657 is a prime.

It is a super-3 number, since 3×68478233³ (a number of 24 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (68478239) 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 as a sum of consecutive naturals, namely, 34239116 + 34239117.

It is an arithmetic number, because the mean of its divisors is an integer number (34239117).

Almost surely, 2^68478233 is an apocalyptic number.

It is an amenable number.

68478233 is a deficient number, since it is larger than the sum of its proper divisors (1).

68478233 is an equidigital number, since it uses as much as digits as its factorization.

68478233 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 193536, while the sum is 41.

The square root of 68478233 is about 8275.1575815812. The cubic root of 68478233 is about 409.1201297841.

The spelling of 68478233 in words is "sixty-eight million, four hundred seventy-eight thousand, two hundred thirty-three".