63513387 has 48 divisors (see below), whose sum is σ = 109304832. Its totient is φ = 34784640.

The previous prime is 63513341. The next prime is 63513397. The reversal of 63513387 is 78331536.

63513387 is a `hidden beast` number, since 63 + 513 + 3 + 87 = 666.

63513387 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 63513387 - 2⁷ = 63513259 is a prime.

It is not an unprimeable number, because it can be changed into a prime (63513397) 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 47 ways as a sum of consecutive naturals, for example, 172878 + ... + 173244.

It is an arithmetic number, because the mean of its divisors is an integer number (2277184).

Almost surely, 2^63513387 is an apocalyptic number.

63513387 is a gapful number since it is divisible by the number (67) formed by its first and last digit.

63513387 is a deficient number, since it is larger than the sum of its proper divisors (45791445).

63513387 is a wasteful number, since it uses less digits than its factorization.

63513387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 488 (or 485 counting only the distinct ones).

The product of its digits is 45360, while the sum is 36.

The square root of 63513387 is about 7969.5286560750. The cubic root of 63513387 is about 398.9836426482.

The spelling of 63513387 in words is "sixty-three million, five hundred thirteen thousand, three hundred eighty-seven".