68049473 has 2 divisors, whose sum is σ = 68049474. Its totient is φ = 68049472.

The previous prime is 68049413. The next prime is 68049481. The reversal of 68049473 is 37494086.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 62995969 + 5053504 = 7937^2 + 2248^2 .

It is a cyclic number.

It is not a de Polignac number, because 68049473 - 2¹² = 68045377 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 68049473.

It is not a weakly prime, because it can be changed into another prime (68049413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34024736 + 34024737.

It is an arithmetic number, because the mean of its divisors is an integer number (34024737).

Almost surely, 2^68049473 is an apocalyptic number.

It is an amenable number.

68049473 is a deficient number, since it is larger than the sum of its proper divisors (1).

68049473 is an equidigital number, since it uses as much as digits as its factorization.

68049473 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 145152, while the sum is 41.

The square root of 68049473 is about 8249.2104470670. The cubic root of 68049473 is about 408.2644723345.

The spelling of 68049473 in words is "sixty-eight million, forty-nine thousand, four hundred seventy-three".