63421911 has 24 divisors (see below), whose sum is σ = 106030080. Its totient is φ = 35779536.

The previous prime is 63421903. The next prime is 63421913. The reversal of 63421911 is 11912436.

63421911 is a `hidden beast` number, since 634 + 2 + 19 + 11 = 666.

It is not a de Polignac number, because 63421911 - 2³ = 63421903 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63421913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1395 + ... + 11348.

It is an arithmetic number, because the mean of its divisors is an integer number (4417920).

Almost surely, 2^63421911 is an apocalyptic number.

63421911 is a deficient number, since it is larger than the sum of its proper divisors (42608169).

63421911 is a wasteful number, since it uses less digits than its factorization.

63421911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12835 (or 12832 counting only the distinct ones).

The product of its digits is 1296, while the sum is 27.

The square root of 63421911 is about 7963.7874783296. The cubic root of 63421911 is about 398.7920034500.

The spelling of 63421911 in words is "sixty-three million, four hundred twenty-one thousand, nine hundred eleven".