63226421 has 4 divisors (see below), whose sum is σ = 64571712. Its totient is φ = 61881132.

The previous prime is 63226399. The next prime is 63226441. The reversal of 63226421 is 12462236.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 63226421 - 2²² = 59032117 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 (63226441) 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, 672575 + ... + 672668.

It is an arithmetic number, because the mean of its divisors is an integer number (16142928).

Almost surely, 2^63226421 is an apocalyptic number.

It is an amenable number.

63226421 is a deficient number, since it is larger than the sum of its proper divisors (1345291).

63226421 is a wasteful number, since it uses less digits than its factorization.

63226421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1345290.

The product of its digits is 3456, while the sum is 26.

The square root of 63226421 is about 7951.5043230825. The cubic root of 63226421 is about 398.3818398045.

Adding to 63226421 its reverse (12462236), we get a palindrome (75688657).

The spelling of 63226421 in words is "sixty-three million, two hundred twenty-six thousand, four hundred twenty-one".