23202661 has 2 divisors, whose sum is σ = 23202662. Its totient is φ = 23202660.

The previous prime is 23202659. The next prime is 23202689. The reversal of 23202661 is 16620232.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15880225 + 7322436 = 3985^2 + 2706^2 .

It is a cyclic number.

It is not a de Polignac number, because 23202661 - 2¹ = 23202659 is a prime.

Together with 23202659, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23202611) 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, 11601330 + 11601331.

It is an arithmetic number, because the mean of its divisors is an integer number (11601331).

Almost surely, 2^23202661 is an apocalyptic number.

It is an amenable number.

23202661 is a deficient number, since it is larger than the sum of its proper divisors (1).

23202661 is an equidigital number, since it uses as much as digits as its factorization.

23202661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 23202661 is about 4816.9140536240. The cubic root of 23202661 is about 285.2195333243.

Adding to 23202661 its reverse (16620232), we get a palindrome (39822893).

The spelling of 23202661 in words is "twenty-three million, two hundred two thousand, six hundred sixty-one".