63881982 has 24 divisors (see below), whose sum is σ = 139266504. Its totient is φ = 21162384.

The previous prime is 63881981. The next prime is 63882011. The reversal of 63881982 is 28918836.

63881982 is a `hidden beast` number, since 638 + 8 + 1 + 9 + 8 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63881981) 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 11 ways as a sum of consecutive naturals, for example, 7953 + ... + 13820.

It is an arithmetic number, because the mean of its divisors is an integer number (5802771).

Almost surely, 2^63881982 is an apocalyptic number.

63881982 is an abundant number, since it is smaller than the sum of its proper divisors (75384522).

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

63881982 is a wasteful number, since it uses less digits than its factorization.

63881982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21944 (or 21941 counting only the distinct ones).

The product of its digits is 165888, while the sum is 45.

The square root of 63881982 is about 7992.6204714099. The cubic root of 63881982 is about 399.7539778805.

The spelling of 63881982 in words is "sixty-three million, eight hundred eighty-one thousand, nine hundred eighty-two".