63409673 has 2 divisors, whose sum is σ = 63409674. Its totient is φ = 63409672.

The previous prime is 63409651. The next prime is 63409679. The reversal of 63409673 is 37690436.

It is a happy number.

63409673 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38837824 + 24571849 = 6232^2 + 4957^2 .

It is a cyclic number.

It is not a de Polignac number, because 63409673 - 2⁸ = 63409417 is a prime.

It is not a weakly prime, because it can be changed into another prime (63409679) 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, 31704836 + 31704837.

It is an arithmetic number, because the mean of its divisors is an integer number (31704837).

Almost surely, 2^63409673 is an apocalyptic number.

It is an amenable number.

63409673 is a deficient number, since it is larger than the sum of its proper divisors (1).

63409673 is an equidigital number, since it uses as much as digits as its factorization.

63409673 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 81648, while the sum is 38.

The square root of 63409673 is about 7963.0190882604. The cubic root of 63409673 is about 398.7663512718.

The spelling of 63409673 in words is "sixty-three million, four hundred nine thousand, six hundred seventy-three".