11646667 has 4 divisors (see below), whose sum is σ = 11667096. Its totient is φ = 11626240.

The previous prime is 11646653. The next prime is 11646673. The reversal of 11646667 is 76664611.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11646667 - 2⁷ = 11646539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11646617) 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, 9334 + ... + 10507.

It is an arithmetic number, because the mean of its divisors is an integer number (2916774).

Almost surely, 2^11646667 is an apocalyptic number.

11646667 is a deficient number, since it is larger than the sum of its proper divisors (20429).

11646667 is an equidigital number, since it uses as much as digits as its factorization.

11646667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20428.

The product of its digits is 36288, while the sum is 37.

The square root of 11646667 is about 3412.7213481326. The cubic root of 11646667 is about 226.6733968109.

The spelling of 11646667 in words is "eleven million, six hundred forty-six thousand, six hundred sixty-seven".