68148473 has 2 divisors, whose sum is σ = 68148474. Its totient is φ = 68148472.

The previous prime is 68148467. The next prime is 68148499. The reversal of 68148473 is 37484186.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 67848169 + 300304 = 8237^2 + 548^2 .

It is a cyclic number.

It is not a de Polignac number, because 68148473 - 2¹⁰ = 68147449 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 68148473.

It is not a weakly prime, because it can be changed into another prime (68148403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34074236 + 34074237.

It is an arithmetic number, because the mean of its divisors is an integer number (34074237).

Almost surely, 2^68148473 is an apocalyptic number.

It is an amenable number.

68148473 is a deficient number, since it is larger than the sum of its proper divisors (1).

68148473 is an equidigital number, since it uses as much as digits as its factorization.

68148473 is an evil number, because the sum of its binary digits is even.

The product of its digits is 129024, while the sum is 41.

The square root of 68148473 is about 8255.2088404837. The cubic root of 68148473 is about 408.4623607058.

The spelling of 68148473 in words is "sixty-eight million, one hundred forty-eight thousand, four hundred seventy-three".