23980643 has 2 divisors, whose sum is σ = 23980644. Its totient is φ = 23980642.

The previous prime is 23980549. The next prime is 23980661. The reversal of 23980643 is 34608932.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23980643 - 2¹⁰ = 23979619 is a prime.

It is not a weakly prime, because it can be changed into another prime (23980673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11990321 + 11990322.

It is an arithmetic number, because the mean of its divisors is an integer number (11990322).

Almost surely, 2^23980643 is an apocalyptic number.

23980643 is a deficient number, since it is larger than the sum of its proper divisors (1).

23980643 is an equidigital number, since it uses as much as digits as its factorization.

23980643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104, while the sum is 35.

The square root of 23980643 is about 4897.0034715119. The cubic root of 23980643 is about 288.3723442452.

The spelling of 23980643 in words is "twenty-three million, nine hundred eighty thousand, six hundred forty-three".