63681793 has 8 divisors (see below), whose sum is σ = 72972288. Its totient is φ = 54439584.

The previous prime is 63681763. The next prime is 63681797. The reversal of 63681793 is 39718636.

63681793 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 63681793 - 2⁹ = 63681281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63681797) 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 7 ways as a sum of consecutive naturals, for example, 9196 + ... + 14557.

It is an arithmetic number, because the mean of its divisors is an integer number (9121536).

Almost surely, 2^63681793 is an apocalyptic number.

It is an amenable number.

63681793 is a deficient number, since it is larger than the sum of its proper divisors (9290495).

63681793 is a wasteful number, since it uses less digits than its factorization.

63681793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24143.

The product of its digits is 163296, while the sum is 43.

The square root of 63681793 is about 7980.0872802244. The cubic root of 63681793 is about 399.3359670105.

The spelling of 63681793 in words is "sixty-three million, six hundred eighty-one thousand, seven hundred ninety-three".