63133636 has 12 divisors (see below), whose sum is σ = 110728828. Its totient is φ = 31496832.

The previous prime is 63133633. The next prime is 63133657. The reversal of 63133636 is 63633136.

It can be written as a sum of positive squares in 2 ways, for example, as 32993536 + 30140100 = 5744^2 + 5490^2 .

It is a junction number, because it is equal to n+sod(n) for n = 63133598 and 63133607.

It is not an unprimeable number, because it can be changed into a prime (63133633) 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, 15441 + ... + 19096.

Almost surely, 2^63133636 is an apocalyptic number.

It is an amenable number.

63133636 is a deficient number, since it is larger than the sum of its proper divisors (47595192).

63133636 is a wasteful number, since it uses less digits than its factorization.

63133636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34998 (or 34996 counting only the distinct ones).

The product of its digits is 17496, while the sum is 31.

The square root of 63133636 is about 7945.6677504159. The cubic root of 63133636 is about 398.1868688060.

Subtracting 63133636 from its reverse (63633136), we obtain a triangular number (499500 = T₉₉₉).

The spelling of 63133636 in words is "sixty-three million, one hundred thirty-three thousand, six hundred thirty-six".