1186667 has 4 divisors (see below), whose sum is σ = 1206840. Its totient is φ = 1166496.

The previous prime is 1186657. The next prime is 1186673. The reversal of 1186667 is 7666811.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7666811 = 1151 ⋅6661.

It is a cyclic number.

It is not a de Polignac number, because 1186667 - 2⁸ = 1186411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1186657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9998 + ... + 10115.

It is an arithmetic number, because the mean of its divisors is an integer number (301710).

2^1186667 is an apocalyptic number.

1186667 is a deficient number, since it is larger than the sum of its proper divisors (20173).

1186667 is an equidigital number, since it uses as much as digits as its factorization.

1186667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20172.

The product of its digits is 12096, while the sum is 35.

The square root of 1186667 is about 1089.3424622221. The cubic root of 1186667 is about 105.8708228246.

The spelling of 1186667 in words is "one million, one hundred eighty-six thousand, six hundred sixty-seven".