23706643 has 4 divisors (see below), whose sum is σ = 23718520. Its totient is φ = 23694768.

The previous prime is 23706637. The next prime is 23706647. The reversal of 23706643 is 34660732.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 23706643 - 2⁵ = 23706611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23706647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2130 + ... + 7207.

It is an arithmetic number, because the mean of its divisors is an integer number (5929630).

Almost surely, 2^23706643 is an apocalyptic number.

23706643 is a deficient number, since it is larger than the sum of its proper divisors (11877).

23706643 is an equidigital number, since it uses as much as digits as its factorization.

23706643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11876.

The product of its (nonzero) digits is 18144, while the sum is 31.

The square root of 23706643 is about 4868.9468060352. The cubic root of 23706643 is about 287.2698316587.

The spelling of 23706643 in words is "twenty-three million, seven hundred six thousand, six hundred forty-three".