68479387 has 2 divisors, whose sum is σ = 68479388. Its totient is φ = 68479386.

The previous prime is 68479331. The next prime is 68479391. The reversal of 68479387 is 78397486.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68479387 - 2¹⁹ = 67955099 is a prime.

It is not a weakly prime, because it can be changed into another prime (68479087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34239693 + 34239694.

It is an arithmetic number, because the mean of its divisors is an integer number (34239694).

Almost surely, 2^68479387 is an apocalyptic number.

68479387 is a deficient number, since it is larger than the sum of its proper divisors (1).

68479387 is an equidigital number, since it uses as much as digits as its factorization.

68479387 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2032128, while the sum is 52.

The square root of 68479387 is about 8275.2273080563. The cubic root of 68479387 is about 409.1224279449.

The spelling of 68479387 in words is "sixty-eight million, four hundred seventy-nine thousand, three hundred eighty-seven".