63705980 has 24 divisors (see below), whose sum is σ = 144074112. Its totient is φ = 23522112.

The previous prime is 63705979. The next prime is 63705997. The reversal of 63705980 is 8950736.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 122252 + ... + 122771.

It is an arithmetic number, because the mean of its divisors is an integer number (6003088).

Almost surely, 2^63705980 is an apocalyptic number.

It is an amenable number.

63705980 is an abundant number, since it is smaller than the sum of its proper divisors (80368132).

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

63705980 is a wasteful number, since it uses less digits than its factorization.

63705980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245045 (or 245043 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 63705980 is about 7981.6025959703. The cubic root of 63705980 is about 399.3865179137.

The spelling of 63705980 in words is "sixty-three million, seven hundred five thousand, nine hundred eighty".