23066909 has 4 divisors (see below), whose sum is σ = 24423804. Its totient is φ = 21710016.

The previous prime is 23066903. The next prime is 23066921. The reversal of 23066909 is 90966032.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 14784025 + 8282884 = 3845^2 + 2878^2 .

It is a cyclic number.

It is not a de Polignac number, because 23066909 - 2⁸ = 23066653 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23066903) 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, 678422 + ... + 678455.

It is an arithmetic number, because the mean of its divisors is an integer number (6105951).

Almost surely, 2^23066909 is an apocalyptic number.

It is an amenable number.

23066909 is a deficient number, since it is larger than the sum of its proper divisors (1356895).

23066909 is a wasteful number, since it uses less digits than its factorization.

23066909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1356894.

The product of its (nonzero) digits is 17496, while the sum is 35.

The square root of 23066909 is about 4802.8022028811. The cubic root of 23066909 is about 284.6621995495.

The spelling of 23066909 in words is "twenty-three million, sixty-six thousand, nine hundred nine".