23643983 has 4 divisors (see below), whose sum is σ = 25793448. Its totient is φ = 21494520.

The previous prime is 23643973. The next prime is 23644009. The reversal of 23643983 is 38934632.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 23643983 - 2¹⁴ = 23627599 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23643913) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1074716 + ... + 1074737.

It is an arithmetic number, because the mean of its divisors is an integer number (6448362).

Almost surely, 2^23643983 is an apocalyptic number.

23643983 is a deficient number, since it is larger than the sum of its proper divisors (2149465).

23643983 is a wasteful number, since it uses less digits than its factorization.

23643983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2149464.

The product of its digits is 93312, while the sum is 38.

The square root of 23643983 is about 4862.5078920244. The cubic root of 23643983 is about 287.0165101163.

The spelling of 23643983 in words is "twenty-three million, six hundred forty-three thousand, nine hundred eighty-three".