13005667 has 4 divisors (see below), whose sum is σ = 13029016. Its totient is φ = 12982320.

The previous prime is 13005637. The next prime is 13005673. The reversal of 13005667 is 76650031.

13005667 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 76650031 = 53 ⋅1446227.

It is a cyclic number.

It is not a de Polignac number, because 13005667 - 2⁷ = 13005539 is a prime.

It is a super-2 number, since 2×13005667² = 338294748229778, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13005637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10818 + ... + 11959.

It is an arithmetic number, because the mean of its divisors is an integer number (3257254).

Almost surely, 2^13005667 is an apocalyptic number.

13005667 is a deficient number, since it is larger than the sum of its proper divisors (23349).

13005667 is an equidigital number, since it uses as much as digits as its factorization.

13005667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23348.

The product of its (nonzero) digits is 3780, while the sum is 28.

The square root of 13005667 is about 3606.3370613408. The cubic root of 13005667 is about 235.1676305103.

Adding to 13005667 its reverse (76650031), we get a palindrome (89655698).

The spelling of 13005667 in words is "thirteen million, five thousand, six hundred sixty-seven".