68157347 has 2 divisors, whose sum is σ = 68157348. Its totient is φ = 68157346.

The previous prime is 68157319. The next prime is 68157391. The reversal of 68157347 is 74375186.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 68157347 - 2¹⁰ = 68156323 is a prime.

It is not a weakly prime, because it can be changed into another prime (68157307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34078673 + 34078674.

It is an arithmetic number, because the mean of its divisors is an integer number (34078674).

Almost surely, 2^68157347 is an apocalyptic number.

68157347 is a deficient number, since it is larger than the sum of its proper divisors (1).

68157347 is an equidigital number, since it uses as much as digits as its factorization.

68157347 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 141120, while the sum is 41.

The square root of 68157347 is about 8255.7463018191. The cubic root of 68157347 is about 408.4800893382.

The spelling of 68157347 in words is "sixty-eight million, one hundred fifty-seven thousand, three hundred forty-seven".