68471147 has 2 divisors, whose sum is σ = 68471148. Its totient is φ = 68471146.

The previous prime is 68471113. The next prime is 68471149. The reversal of 68471147 is 74117486.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68471147 - 2⁸ = 68470891 is a prime.

Together with 68471149, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 68471147.

It is not a weakly prime, because it can be changed into another prime (68471149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34235573 + 34235574.

It is an arithmetic number, because the mean of its divisors is an integer number (34235574).

Almost surely, 2^68471147 is an apocalyptic number.

68471147 is a deficient number, since it is larger than the sum of its proper divisors (1).

68471147 is an equidigital number, since it uses as much as digits as its factorization.

68471147 is an evil number, because the sum of its binary digits is even.

The product of its digits is 37632, while the sum is 38.

The square root of 68471147 is about 8274.7294215581. The cubic root of 68471147 is about 409.1060176343.

The spelling of 68471147 in words is "sixty-eight million, four hundred seventy-one thousand, one hundred forty-seven".