63531612 has 54 divisors (see below), whose sum is σ = 168183288. Its totient is φ = 20183328.

The previous prime is 63531599. The next prime is 63531647. The reversal of 63531612 is 21613536.

63531612 is a `hidden beast` number, since 635 + 3 + 16 + 12 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 229218 + ... + 229494.

Almost surely, 2^63531612 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63531612, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84091644).

63531612 is an abundant number, since it is smaller than the sum of its proper divisors (104651676).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

63531612 is a wasteful number, since it uses less digits than its factorization.

63531612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 587 (or 305 counting only the distinct ones).

The product of its digits is 3240, while the sum is 27.

The square root of 63531612 is about 7970.6719917457. The cubic root of 63531612 is about 399.0218014356.

The spelling of 63531612 in words is "sixty-three million, five hundred thirty-one thousand, six hundred twelve".