68328947 has 2 divisors, whose sum is σ = 68328948. Its totient is φ = 68328946.

The previous prime is 68328941. The next prime is 68328971. The reversal of 68328947 is 74982386.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 68328947 - 2⁸ = 68328691 is a prime.

It is not a weakly prime, because it can be changed into another prime (68328941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34164473 + 34164474.

It is an arithmetic number, because the mean of its divisors is an integer number (34164474).

Almost surely, 2^68328947 is an apocalyptic number.

68328947 is a deficient number, since it is larger than the sum of its proper divisors (1).

68328947 is an equidigital number, since it uses as much as digits as its factorization.

68328947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 580608, while the sum is 47.

The square root of 68328947 is about 8266.1325297868. The cubic root of 68328947 is about 408.8226126427.

The spelling of 68328947 in words is "sixty-eight million, three hundred twenty-eight thousand, nine hundred forty-seven".