68378147 has 2 divisors, whose sum is σ = 68378148. Its totient is φ = 68378146.

The previous prime is 68378129. The next prime is 68378153. The reversal of 68378147 is 74187386.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68378147 - 2⁶ = 68378083 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 68378098 and 68378107.

It is not a weakly prime, because it can be changed into another prime (68378117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34189073 + 34189074.

It is an arithmetic number, because the mean of its divisors is an integer number (34189074).

Almost surely, 2^68378147 is an apocalyptic number.

68378147 is a deficient number, since it is larger than the sum of its proper divisors (1).

68378147 is an equidigital number, since it uses as much as digits as its factorization.

68378147 is an evil number, because the sum of its binary digits is even.

The product of its digits is 225792, while the sum is 44.

The square root of 68378147 is about 8269.1079930063. The cubic root of 68378147 is about 408.9207128266.

The spelling of 68378147 in words is "sixty-eight million, three hundred seventy-eight thousand, one hundred forty-seven".