63128763 has 12 divisors (see below), whose sum is σ = 91258960. Its totient is φ = 42052176.

The previous prime is 63128753. The next prime is 63128783. The reversal of 63128763 is 36782136.

It is a happy number.

It is not a de Polignac number, because 63128763 - 2⁵ = 63128731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63128713) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15045 + ... + 18777.

Almost surely, 2^63128763 is an apocalyptic number.

63128763 is a deficient number, since it is larger than the sum of its proper divisors (28130197).

63128763 is a wasteful number, since it uses less digits than its factorization.

63128763 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5618 (or 5615 counting only the distinct ones).

The product of its digits is 36288, while the sum is 36.

The square root of 63128763 is about 7945.3610994089. The cubic root of 63128763 is about 398.1766237942.

The spelling of 63128763 in words is "sixty-three million, one hundred twenty-eight thousand, seven hundred sixty-three".