63218956 has 24 divisors (see below), whose sum is σ = 115118640. Its totient is φ = 30340800.

The previous prime is 63218933. The next prime is 63218959. The reversal of 63218956 is 65981236.

It is not an unprimeable number, because it can be changed into a prime (63218959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19491 + ... + 22501.

It is an arithmetic number, because the mean of its divisors is an integer number (4796610).

Almost surely, 2^63218956 is an apocalyptic number.

It is an amenable number.

63218956 is a deficient number, since it is larger than the sum of its proper divisors (51899684).

63218956 is a wasteful number, since it uses less digits than its factorization.

63218956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3225 (or 3223 counting only the distinct ones).

The product of its digits is 77760, while the sum is 40.

The square root of 63218956 is about 7951.0349011937. The cubic root of 63218956 is about 398.3661605076.

The spelling of 63218956 in words is "sixty-three million, two hundred eighteen thousand, nine hundred fifty-six".