63894497 has 2 divisors, whose sum is σ = 63894498. Its totient is φ = 63894496.

The previous prime is 63894487. The next prime is 63894539. The reversal of 63894497 is 79449836.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63856081 + 38416 = 7991^2 + 196^2 .

It is a cyclic number.

It is not a de Polignac number, because 63894497 - 2⁶ = 63894433 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (63894407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31947248 + 31947249.

It is an arithmetic number, because the mean of its divisors is an integer number (31947249).

Almost surely, 2^63894497 is an apocalyptic number.

It is an amenable number.

63894497 is a deficient number, since it is larger than the sum of its proper divisors (1).

63894497 is an equidigital number, since it uses as much as digits as its factorization.

63894497 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1306368, while the sum is 50.

The square root of 63894497 is about 7993.4033427571. The cubic root of 63894497 is about 399.7800811948.

The spelling of 63894497 in words is "sixty-three million, eight hundred ninety-four thousand, four hundred ninety-seven".