23972687 has 2 divisors, whose sum is σ = 23972688. Its totient is φ = 23972686.

The previous prime is 23972621. The next prime is 23972719. The reversal of 23972687 is 78627932.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23972687 - 2¹⁰ = 23971663 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23972287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11986343 + 11986344.

It is an arithmetic number, because the mean of its divisors is an integer number (11986344).

Almost surely, 2^23972687 is an apocalyptic number.

23972687 is a deficient number, since it is larger than the sum of its proper divisors (1).

23972687 is an equidigital number, since it uses as much as digits as its factorization.

23972687 is an evil number, because the sum of its binary digits is even.

The product of its digits is 254016, while the sum is 44.

The square root of 23972687 is about 4896.1910706181. The cubic root of 23972687 is about 288.3404498524.

The spelling of 23972687 in words is "twenty-three million, nine hundred seventy-two thousand, six hundred eighty-seven".