23865901 has 2 divisors, whose sum is σ = 23865902. Its totient is φ = 23865900.

The previous prime is 23865899. The next prime is 23865991. The reversal of 23865901 is 10956832.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23474025 + 391876 = 4845^2 + 626^2 .

It is a cyclic number.

It is not a de Polignac number, because 23865901 - 2¹ = 23865899 is a prime.

Together with 23865899, 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 (23865991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11932950 + 11932951.

It is an arithmetic number, because the mean of its divisors is an integer number (11932951).

Almost surely, 2^23865901 is an apocalyptic number.

It is an amenable number.

23865901 is a deficient number, since it is larger than the sum of its proper divisors (1).

23865901 is an equidigital number, since it uses as much as digits as its factorization.

23865901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 23865901 is about 4885.2738920147. The cubic root of 23865901 is about 287.9116763944.

The spelling of 23865901 in words is "twenty-three million, eight hundred sixty-five thousand, nine hundred one".