23721673 has 2 divisors, whose sum is σ = 23721674. Its totient is φ = 23721672.

The previous prime is 23721667. The next prime is 23721689. The reversal of 23721673 is 37612732.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23068809 + 652864 = 4803^2 + 808^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23721673 is a prime.

It is not a weakly prime, because it can be changed into another prime (23721653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11860836 + 11860837.

It is an arithmetic number, because the mean of its divisors is an integer number (11860837).

Almost surely, 2^23721673 is an apocalyptic number.

It is an amenable number.

23721673 is a deficient number, since it is larger than the sum of its proper divisors (1).

23721673 is an equidigital number, since it uses as much as digits as its factorization.

23721673 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10584, while the sum is 31.

The square root of 23721673 is about 4870.4900164152. The cubic root of 23721673 is about 287.3305284773.

The spelling of 23721673 in words is "twenty-three million, seven hundred twenty-one thousand, six hundred seventy-three".