63767985 has 8 divisors (see below), whose sum is σ = 102028800. Its totient is φ = 34009584.

The previous prime is 63767981. The next prime is 63767993. The reversal of 63767985 is 58976736.

63767985 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 not a de Polignac number, because 63767985 - 2² = 63767981 is a prime.

It is not an unprimeable number, because it can be changed into a prime (63767981) 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, 2125585 + ... + 2125614.

It is an arithmetic number, because the mean of its divisors is an integer number (12753600).

Almost surely, 2^63767985 is an apocalyptic number.

It is an amenable number.

63767985 is a deficient number, since it is larger than the sum of its proper divisors (38260815).

63767985 is a wasteful number, since it uses less digits than its factorization.

63767985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4251207.

The product of its digits is 1905120, while the sum is 51.

The square root of 63767985 is about 7985.4858962996. The cubic root of 63767985 is about 399.5160501341.

The spelling of 63767985 in words is "sixty-three million, seven hundred sixty-seven thousand, nine hundred eighty-five".