23667481 has 2 divisors, whose sum is σ = 23667482. Its totient is φ = 23667480.

The previous prime is 23667439. The next prime is 23667491. The reversal of 23667481 is 18476632.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23609881 + 57600 = 4859^2 + 240^2 .

It is a cyclic number.

It is not a de Polignac number, because 23667481 - 2¹³ = 23659289 is a prime.

It is a super-2 number, since 2×23667481² = 1120299313770722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 23667481.

It is not a weakly prime, because it can be changed into another prime (23667401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11833740 + 11833741.

It is an arithmetic number, because the mean of its divisors is an integer number (11833741).

Almost surely, 2^23667481 is an apocalyptic number.

It is an amenable number.

23667481 is a deficient number, since it is larger than the sum of its proper divisors (1).

23667481 is an equidigital number, since it uses as much as digits as its factorization.

23667481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48384, while the sum is 37.

The square root of 23667481 is about 4864.9235348564. The cubic root of 23667481 is about 287.1115601051. Note that the first 3 decimals are identical.

The spelling of 23667481 in words is "twenty-three million, six hundred sixty-seven thousand, four hundred eighty-one".