229563621 has 24 divisors (see below), whose sum is σ = 395441280. Its totient is φ = 125474976.

The previous prime is 229563601. The next prime is 229563629. The reversal of 229563621 is 126365922.

229563621 is a `hidden beast` number, since 2 + 29 + 5 + 6 + 3 + 621 = 666.

It is not a de Polignac number, because 229563621 - 2⁵ = 229563589 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (229563629) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 77766 + ... + 80663.

It is an arithmetic number, because the mean of its divisors is an integer number (16476720).

Almost surely, 2^229563621 is an apocalyptic number.

229563621 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

229563621 is a deficient number, since it is larger than the sum of its proper divisors (165877659).

229563621 is a wasteful number, since it uses less digits than its factorization.

229563621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158465 (or 158462 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

The square root of 229563621 is about 15151.3570679329. The cubic root of 229563621 is about 612.3048350016.

The spelling of 229563621 in words is "two hundred twenty-nine million, five hundred sixty-three thousand, six hundred twenty-one".