68510047 has 2 divisors, whose sum is σ = 68510048. Its totient is φ = 68510046.

The previous prime is 68510027. The next prime is 68510053. The reversal of 68510047 is 74001586.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68510047 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68510027) 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, 34255023 + 34255024.

It is an arithmetic number, because the mean of its divisors is an integer number (34255024).

Almost surely, 2^68510047 is an apocalyptic number.

68510047 is a deficient number, since it is larger than the sum of its proper divisors (1).

68510047 is an equidigital number, since it uses as much as digits as its factorization.

68510047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 68510047 is about 8277.0796178362. The cubic root of 68510047 is about 409.1834770801.

The spelling of 68510047 in words is "sixty-eight million, five hundred ten thousand, forty-seven".