23687863 has 2 divisors, whose sum is σ = 23687864. Its totient is φ = 23687862.

The previous prime is 23687849. The next prime is 23687869. The reversal of 23687863 is 36878632.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23687863 - 2¹³ = 23679671 is a prime.

It is a super-2 number, since 2×23687863² = 1122229707013538, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23687869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11843931 + 11843932.

It is an arithmetic number, because the mean of its divisors is an integer number (11843932).

Almost surely, 2^23687863 is an apocalyptic number.

23687863 is a deficient number, since it is larger than the sum of its proper divisors (1).

23687863 is an equidigital number, since it uses as much as digits as its factorization.

23687863 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 290304, while the sum is 43.

The square root of 23687863 is about 4867.0178754552. The cubic root of 23687863 is about 287.1939548584.

The spelling of 23687863 in words is "twenty-three million, six hundred eighty-seven thousand, eight hundred sixty-three".