23677621 has 4 divisors (see below), whose sum is σ = 25830144. Its totient is φ = 21525100.

The previous prime is 23677609. The next prime is 23677637. The reversal of 23677621 is 12677632.

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 a cyclic number.

It is not a de Polignac number, because 23677621 - 2⁹ = 23677109 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 (23677691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1076245 + ... + 1076266.

It is an arithmetic number, because the mean of its divisors is an integer number (6457536).

Almost surely, 2^23677621 is an apocalyptic number.

It is an amenable number.

23677621 is a deficient number, since it is larger than the sum of its proper divisors (2152523).

23677621 is a wasteful number, since it uses less digits than its factorization.

23677621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2152522.

The product of its digits is 21168, while the sum is 34.

The square root of 23677621 is about 4865.9655773546. The cubic root of 23677621 is about 287.1525572233.

The spelling of 23677621 in words is "twenty-three million, six hundred seventy-seven thousand, six hundred twenty-one".