1186867 has 4 divisors (see below), whose sum is σ = 1294776. Its totient is φ = 1078960.

The previous prime is 1186847. The next prime is 1186879. The reversal of 1186867 is 7686811.

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 1186867 - 2⁷ = 1186739 is a prime.

It is a Duffinian number.

1186867 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1186807) 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, 53938 + ... + 53959.

It is an arithmetic number, because the mean of its divisors is an integer number (323694).

2^1186867 is an apocalyptic number.

1186867 is a deficient number, since it is larger than the sum of its proper divisors (107909).

1186867 is a wasteful number, since it uses less digits than its factorization.

1186867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107908.

The product of its digits is 16128, while the sum is 37.

The square root of 1186867 is about 1089.4342568508. The cubic root of 1186867 is about 105.8767702878.

It can be divided in two parts, 11868 and 67, that added together give a triangular number (11935 = T₁₅₄).

The spelling of 1186867 in words is "one million, one hundred eighty-six thousand, eight hundred sixty-seven".