63984380 has 24 divisors (see below), whose sum is σ = 135178848. Its totient is φ = 25439168.

The previous prime is 63984377. The next prime is 63984407. The reversal of 63984380 is 8348936.

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, 6239 + ... + 12918.

It is an arithmetic number, because the mean of its divisors is an integer number (5632452).

Almost surely, 2^63984380 is an apocalyptic number.

It is an amenable number.

63984380 is an abundant number, since it is smaller than the sum of its proper divisors (71194468).

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

63984380 is a wasteful number, since it uses less digits than its factorization.

63984380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19333 (or 19331 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 41.

The square root of 63984380 is about 7999.0236904262. The cubic root of 63984380 is about 399.9674556856.

The spelling of 63984380 in words is "sixty-three million, nine hundred eighty-four thousand, three hundred eighty".