63512885 has 4 divisors (see below), whose sum is σ = 76215468. Its totient is φ = 50810304.

The previous prime is 63512881. The next prime is 63512887. The reversal of 63512885 is 58821536.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 36493681 + 27019204 = 6041^2 + 5198^2 .

It is a cyclic number.

It is not a de Polignac number, because 63512885 - 2² = 63512881 is a prime.

It is a super-2 number, since 2×63512885² = 8067773122046450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63512881) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6351284 + ... + 6351293.

It is an arithmetic number, because the mean of its divisors is an integer number (19053867).

Almost surely, 2^63512885 is an apocalyptic number.

It is an amenable number.

63512885 is a deficient number, since it is larger than the sum of its proper divisors (12702583).

63512885 is a wasteful number, since it uses less digits than its factorization.

63512885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12702582.

The product of its digits is 57600, while the sum is 38.

The square root of 63512885 is about 7969.4971610510. The cubic root of 63512885 is about 398.9825914771.

The spelling of 63512885 in words is "sixty-three million, five hundred twelve thousand, eight hundred eighty-five".