68947159 has 2 divisors, whose sum is σ = 68947160. Its totient is φ = 68947158.

The previous prime is 68947147. The next prime is 68947163. The reversal of 68947159 is 95174986.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68947159 - 2¹¹ = 68945111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68947129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34473579 + 34473580.

It is an arithmetic number, because the mean of its divisors is an integer number (34473580).

Almost surely, 2^68947159 is an apocalyptic number.

68947159 is a deficient number, since it is larger than the sum of its proper divisors (1).

68947159 is an equidigital number, since it uses as much as digits as its factorization.

68947159 is an evil number, because the sum of its binary digits is even.

The product of its digits is 544320, while the sum is 49.

The square root of 68947159 is about 8303.4425993078. The cubic root of 68947159 is about 410.0518653404.

The spelling of 68947159 in words is "sixty-eight million, nine hundred forty-seven thousand, one hundred fifty-nine".