63689689058724 has 81 divisors (see below), whose sum is σ = 171022835907651. Its totient is φ = 19980823541760.

The previous prime is 63689689058719. The next prime is 63689689058759. The reversal of 63689689058724 is 42785098698636.

It is a happy number.

The square root of 63689689058724 is 7980582.

It is a perfect power (a square), and thus also a powerful number.

63689689058724 is a `hidden beast` number, since 6 + 3 + 6 + 8 + 9 + 6 + 8 + 9 + 0 + 587 + 24 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 41396484680100 + 22293204378624 = 6434010^2 + 4721568^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 813980244 + ... + 814058484.

Almost surely, 2^{63689689058724} is an apocalyptic number.

63689689058724 is the 7980582-nd square number.

It is an amenable number.

63689689058724 is an abundant number, since it is smaller than the sum of its proper divisors (107333146848927).

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

63689689058724 is an frugal number, since it uses more digits than its factorization.

63689689058724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156526 (or 78263 counting only the distinct ones).

The product of its (nonzero) digits is 7524679680, while the sum is 81.

The spelling of 63689689058724 in words is "sixty-three trillion, six hundred eighty-nine billion, six hundred eighty-nine million, fifty-eight thousand, seven hundred twenty-four".