11871667 has 8 divisors (see below), whose sum is σ = 12366720. Its totient is φ = 11383680.

The previous prime is 11871659. The next prime is 11871689. The reversal of 11871667 is 76617811.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11871667 - 2³ = 11871659 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11871617) 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 7 ways as a sum of consecutive naturals, for example, 1809 + ... + 5197.

It is an arithmetic number, because the mean of its divisors is an integer number (1545840).

Almost surely, 2^11871667 is an apocalyptic number.

11871667 is a deficient number, since it is larger than the sum of its proper divisors (495053).

11871667 is a wasteful number, since it uses less digits than its factorization.

11871667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3533.

The product of its digits is 14112, while the sum is 37.

The square root of 11871667 is about 3445.5285516158. The cubic root of 11871667 is about 228.1237849938.

The spelling of 11871667 in words is "eleven million, eight hundred seventy-one thousand, six hundred sixty-seven".