63494817 has 4 divisors (see below), whose sum is σ = 84659760. Its totient is φ = 42329876.

The previous prime is 63494807. The next prime is 63494819. The reversal of 63494817 is 71849436.

63494817 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 63494817 - 2⁴ = 63494801 is a prime.

It is not an unprimeable number, because it can be changed into a prime (63494819) 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 in 3 ways as a sum of consecutive naturals, for example, 10582467 + ... + 10582472.

It is an arithmetic number, because the mean of its divisors is an integer number (21164940).

Almost surely, 2^63494817 is an apocalyptic number.

It is an amenable number.

63494817 is a deficient number, since it is larger than the sum of its proper divisors (21164943).

63494817 is a wasteful number, since it uses less digits than its factorization.

63494817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21164942.

The product of its digits is 145152, while the sum is 42.

The square root of 63494817 is about 7968.3635082745. The cubic root of 63494817 is about 398.9447540044.

The spelling of 63494817 in words is "sixty-three million, four hundred ninety-four thousand, eight hundred seventeen".