63689900 has 36 divisors (see below), whose sum is σ = 145485480. Its totient is φ = 24134400.

The previous prime is 63689891. The next prime is 63689953. The reversal of 63689900 is 998636.

It is a super-4 number, since 4×63689900⁴ (a number of 32 digits) contains 4444 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14861 + ... + 18660.

Almost surely, 2^63689900 is an apocalyptic number.

It is an amenable number.

63689900 is an abundant number, since it is smaller than the sum of its proper divisors (81795580).

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

63689900 is a wasteful number, since it uses less digits than its factorization.

63689900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33554 (or 33547 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 41.

The square root of 63689900 is about 7980.5952158971. The cubic root of 63689900 is about 399.3529120909.

The spelling of 63689900 in words is "sixty-three million, six hundred eighty-nine thousand, nine hundred".