14566991 has 4 divisors (see below), whose sum is σ = 14575392. Its totient is φ = 14558592.

The previous prime is 14566973. The next prime is 14567023. The reversal of 14566991 is 19966541.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 14566991 - 2¹⁸ = 14304847 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14566921) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 530 + ... + 5423.

It is an arithmetic number, because the mean of its divisors is an integer number (3643848).

Almost surely, 2^14566991 is an apocalyptic number.

14566991 is a deficient number, since it is larger than the sum of its proper divisors (8401).

14566991 is an equidigital number, since it uses as much as digits as its factorization.

14566991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8400.

The product of its digits is 58320, while the sum is 41.

The square root of 14566991 is about 3816.6727656429. The cubic root of 14566991 is about 244.2249057275.

The spelling of 14566991 in words is "fourteen million, five hundred sixty-six thousand, nine hundred ninety-one".