63521936 has 10 divisors (see below), whose sum is σ = 123073782. Its totient is φ = 31760960.

The previous prime is 63521893. The next prime is 63521981. The reversal of 63521936 is 63912536.

It can be written as a sum of positive squares in only one way, i.e., 52998400 + 10523536 = 7280^2 + 3244^2 .

It is a junction number, because it is equal to n+sod(n) for n = 63521896 and 63521905.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1985045 + ... + 1985076.

Almost surely, 2^63521936 is an apocalyptic number.

It is an amenable number.

63521936 is a deficient number, since it is larger than the sum of its proper divisors (59551846).

63521936 is a wasteful number, since it uses less digits than its factorization.

63521936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3970129 (or 3970123 counting only the distinct ones).

The product of its digits is 29160, while the sum is 35.

The square root of 63521936 is about 7970.0649934615. The cubic root of 63521936 is about 399.0015431167.

The spelling of 63521936 in words is "sixty-three million, five hundred twenty-one thousand, nine hundred thirty-six".