232638621 has 4 divisors (see below), whose sum is σ = 310184832. Its totient is φ = 155092412.

The previous prime is 232638611. The next prime is 232638631. The reversal of 232638621 is 126836232.

It is a happy number.

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 an interprime number because it is at equal distance from previous prime (232638611) and next prime (232638631).

It is a cyclic number.

It is not a de Polignac number, because 232638621 - 2¹⁰ = 232637597 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (232638611) 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, 38773101 + ... + 38773106.

It is an arithmetic number, because the mean of its divisors is an integer number (77546208).

Almost surely, 2^232638621 is an apocalyptic number.

It is an amenable number.

232638621 is a deficient number, since it is larger than the sum of its proper divisors (77546211).

232638621 is an equidigital number, since it uses as much as digits as its factorization.

232638621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77546210.

The product of its digits is 20736, while the sum is 33.

The square root of 232638621 is about 15252.4955663000. The cubic root of 232638621 is about 615.0266549357.

The spelling of 232638621 in words is "two hundred thirty-two million, six hundred thirty-eight thousand, six hundred twenty-one".