63421136 has 20 divisors (see below), whose sum is σ = 123779652. Its totient is φ = 31478016.

The previous prime is 63421129. The next prime is 63421139. The reversal of 63421136 is 63112436.

It can be written as a sum of positive squares in 2 ways, for example, as 35331136 + 28090000 = 5944^2 + 5300^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63421139) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12275 + ... + 16658.

Almost surely, 2^63421136 is an apocalyptic number.

It is an amenable number.

63421136 is a deficient number, since it is larger than the sum of its proper divisors (60358516).

63421136 is a wasteful number, since it uses less digits than its factorization.

63421136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29078 (or 29072 counting only the distinct ones).

The product of its digits is 2592, while the sum is 26.

The square root of 63421136 is about 7963.7388204285. The cubic root of 63421136 is about 398.7903790636.

The spelling of 63421136 in words is "sixty-three million, four hundred twenty-one thousand, one hundred thirty-six".