63456973 has 4 divisors (see below), whose sum is σ = 64404160. Its totient is φ = 62509788.

The previous prime is 63456917. The next prime is 63456989. The reversal of 63456973 is 37965436.

63456973 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 a de Polignac number, because none of the positive numbers 2^k-63456973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63450973) 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, 473493 + ... + 473626.

It is an arithmetic number, because the mean of its divisors is an integer number (16101040).

Almost surely, 2^63456973 is an apocalyptic number.

It is an amenable number.

63456973 is a deficient number, since it is larger than the sum of its proper divisors (947187).

63456973 is an equidigital number, since it uses as much as digits as its factorization.

63456973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 947186.

The product of its digits is 408240, while the sum is 43.

The square root of 63456973 is about 7965.9885136749. The cubic root of 63456973 is about 398.8654789472.

The spelling of 63456973 in words is "sixty-three million, four hundred fifty-six thousand, nine hundred seventy-three".