63513512 has 8 divisors (see below), whose sum is σ = 119087850. Its totient is φ = 31756752.

The previous prime is 63513481. The next prime is 63513517. The reversal of 63513512 is 21531536.

It can be written as a sum of positive squares in only one way, i.e., 51638596 + 11874916 = 7186^2 + 3446^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (63513517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3969587 + ... + 3969602.

Almost surely, 2^63513512 is an apocalyptic number.

It is an amenable number.

63513512 is a deficient number, since it is larger than the sum of its proper divisors (55574338).

63513512 is a wasteful number, since it uses less digits than its factorization.

63513512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7939195 (or 7939191 counting only the distinct ones).

The product of its digits is 2700, while the sum is 26.

The square root of 63513512 is about 7969.5364984421. The cubic root of 63513512 is about 398.9839043932.

The spelling of 63513512 in words is "sixty-three million, five hundred thirteen thousand, five hundred twelve".