63900684760 has 64 divisors (see below), whose sum is σ = 157753954080. Its totient is φ = 23102269440.

The previous prime is 63900684751. The next prime is 63900684761. The reversal of 63900684760 is 6748600936.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63900684761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 343617 + ... + 495856.

Almost surely, 2^63900684760 is an apocalyptic number.

It is an amenable number.

63900684760 is an abundant number, since it is smaller than the sum of its proper divisors (93853269320).

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

63900684760 is a wasteful number, since it uses less digits than its factorization.

63900684760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 839668 (or 839664 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 49.

The spelling of 63900684760 in words is "sixty-three billion, nine hundred million, six hundred eighty-four thousand, seven hundred sixty".