23226661 has 2 divisors, whose sum is σ = 23226662. Its totient is φ = 23226660.

The previous prime is 23226647. The next prime is 23226673. The reversal of 23226661 is 16662232.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23184225 + 42436 = 4815^2 + 206^2 .

It is a cyclic number.

It is not a de Polignac number, because 23226661 - 2¹³ = 23218469 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23226611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11613330 + 11613331.

It is an arithmetic number, because the mean of its divisors is an integer number (11613331).

Almost surely, 2^23226661 is an apocalyptic number.

It is an amenable number.

23226661 is a deficient number, since it is larger than the sum of its proper divisors (1).

23226661 is an equidigital number, since it uses as much as digits as its factorization.

23226661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5184, while the sum is 28.

The square root of 23226661 is about 4819.4046312797. The cubic root of 23226661 is about 285.3178397210.

Adding to 23226661 its reverse (16662232), we get a palindrome (39888893).

The spelling of 23226661 in words is "twenty-three million, two hundred twenty-six thousand, six hundred sixty-one".