68393147 has 2 divisors, whose sum is σ = 68393148. Its totient is φ = 68393146.

The previous prime is 68393113. The next prime is 68393197. The reversal of 68393147 is 74139386.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 68393147 - 2¹⁸ = 68131003 is a prime.

It is not a weakly prime, because it can be changed into another prime (68393197) 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 as a sum of consecutive naturals, namely, 34196573 + 34196574.

It is an arithmetic number, because the mean of its divisors is an integer number (34196574).

Almost surely, 2^68393147 is an apocalyptic number.

68393147 is a deficient number, since it is larger than the sum of its proper divisors (1).

68393147 is an equidigital number, since it uses as much as digits as its factorization.

68393147 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108864, while the sum is 41.

The square root of 68393147 is about 8270.0149334811. The cubic root of 68393147 is about 408.9506120585.

The spelling of 68393147 in words is "sixty-eight million, three hundred ninety-three thousand, one hundred forty-seven".