421636063 has 4 divisors (see below), whose sum is σ = 424956160. Its totient is φ = 418315968.

The previous prime is 421636031. The next prime is 421636079. The reversal of 421636063 is 360636124.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 421636063 - 2⁵ = 421636031 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421636003) 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 3 ways as a sum of consecutive naturals, for example, 1659858 + ... + 1660111.

It is an arithmetic number, because the mean of its divisors is an integer number (106239040).

Almost surely, 2^421636063 is an apocalyptic number.

421636063 is a deficient number, since it is larger than the sum of its proper divisors (3320097).

421636063 is a wasteful number, since it uses less digits than its factorization.

421636063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3320096.

The product of its (nonzero) digits is 15552, while the sum is 31.

The square root of 421636063 is about 20533.7785855405. The cubic root of 421636063 is about 749.8583809641.

The spelling of 421636063 in words is "four hundred twenty-one million, six hundred thirty-six thousand, sixty-three".