64808473 has 2 divisors, whose sum is σ = 64808474. Its totient is φ = 64808472.

The previous prime is 64808467. The next prime is 64808489. The reversal of 64808473 is 37480846.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53699584 + 11108889 = 7328^2 + 3333^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64808473 is a prime.

It is not a weakly prime, because it can be changed into another prime (64808173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32404236 + 32404237.

It is an arithmetic number, because the mean of its divisors is an integer number (32404237).

Almost surely, 2^64808473 is an apocalyptic number.

It is an amenable number.

64808473 is a deficient number, since it is larger than the sum of its proper divisors (1).

64808473 is an equidigital number, since it uses as much as digits as its factorization.

64808473 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 129024, while the sum is 40.

The square root of 64808473 is about 8050.3709852404. The cubic root of 64808473 is about 401.6772757844.

The spelling of 64808473 in words is "sixty-four million, eight hundred eight thousand, four hundred seventy-three".