63989136 has 40 divisors (see below), whose sum is σ = 183673760. Its totient is φ = 21329568.

The previous prime is 63989129. The next prime is 63989141. The reversal of 63989136 is 63198936.

63989136 is a `hidden beast` number, since 639 + 8 + 9 + 1 + 3 + 6 = 666.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 63989091 and 63989100.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73630 + ... + 74493.

It is an arithmetic number, because the mean of its divisors is an integer number (4591844).

Almost surely, 2^63989136 is an apocalyptic number.

It is an amenable number.

63989136 is an abundant number, since it is smaller than the sum of its proper divisors (119684624).

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

63989136 is a wasteful number, since it uses less digits than its factorization.

63989136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148140 (or 148128 counting only the distinct ones).

The product of its digits is 209952, while the sum is 45.

The square root of 63989136 is about 7999.3209711825. The cubic root of 63989136 is about 399.9773653859.

The spelling of 63989136 in words is "sixty-three million, nine hundred eighty-nine thousand, one hundred thirty-six".