11866567 has 2 divisors, whose sum is σ = 11866568. Its totient is φ = 11866566.

The previous prime is 11866553. The next prime is 11866573. The reversal of 11866567 is 76566811.

11866567 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (76566811) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11866567 - 2²³ = 3477959 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11866577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5933283 + 5933284.

It is an arithmetic number, because the mean of its divisors is an integer number (5933284).

Almost surely, 2^11866567 is an apocalyptic number.

11866567 is a deficient number, since it is larger than the sum of its proper divisors (1).

11866567 is an equidigital number, since it uses as much as digits as its factorization.

11866567 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60480, while the sum is 40.

The square root of 11866567 is about 3444.7883824700. The cubic root of 11866567 is about 228.0911134254.

The spelling of 11866567 in words is "eleven million, eight hundred sixty-six thousand, five hundred sixty-seven".