23660389 has 2 divisors, whose sum is σ = 23660390. Its totient is φ = 23660388.

The previous prime is 23660381. The next prime is 23660401. The reversal of 23660389 is 98306632.

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., 23357889 + 302500 = 4833^2 + 550^2 .

It is a cyclic number.

It is not a de Polignac number, because 23660389 - 2³ = 23660381 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 (23660381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11830194 + 11830195.

It is an arithmetic number, because the mean of its divisors is an integer number (11830195).

Almost surely, 2^23660389 is an apocalyptic number.

It is an amenable number.

23660389 is a deficient number, since it is larger than the sum of its proper divisors (1).

23660389 is an equidigital number, since it uses as much as digits as its factorization.

23660389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46656, while the sum is 37.

The square root of 23660389 is about 4864.1945890353. The cubic root of 23660389 is about 287.0828794216.

The spelling of 23660389 in words is "twenty-three million, six hundred sixty thousand, three hundred eighty-nine".