1165867 has 4 divisors (see below), whose sum is σ = 1183336. Its totient is φ = 1148400.

The previous prime is 1165861. The next prime is 1165873. The reversal of 1165867 is 7685611.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7685611 = 23 ⋅334157.

It is an interprime number because it is at equal distance from previous prime (1165861) and next prime (1165873).

It is a cyclic number.

It is not a de Polignac number, because 1165867 - 2⁷ = 1165739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1165861) 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, 8634 + ... + 8767.

It is an arithmetic number, because the mean of its divisors is an integer number (295834).

2^1165867 is an apocalyptic number.

1165867 is a deficient number, since it is larger than the sum of its proper divisors (17469).

1165867 is an equidigital number, since it uses as much as digits as its factorization.

1165867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17468.

The product of its digits is 10080, while the sum is 34.

The square root of 1165867 is about 1079.7532125444. The cubic root of 1165867 is about 105.2486021672.

The spelling of 1165867 in words is "one million, one hundred sixty-five thousand, eight hundred sixty-seven".