1143567 has 12 divisors (see below), whose sum is σ = 1679704. Its totient is φ = 749520.

The previous prime is 1143563. The next prime is 1143577. The reversal of 1143567 is 7653411.

It is not a de Polignac number, because 1143567 - 2² = 1143563 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1143567.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143563) 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 11 ways as a sum of consecutive naturals, for example, 493 + ... + 1590.

2^1143567 is an apocalyptic number.

1143567 is a deficient number, since it is larger than the sum of its proper divisors (536137).

1143567 is a wasteful number, since it uses less digits than its factorization.

1143567 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2150 (or 2147 counting only the distinct ones).

The product of its digits is 2520, while the sum is 27.

The square root of 1143567 is about 1069.3769213893. The cubic root of 1143567 is about 104.5732337706.

Adding to 1143567 its reverse (7653411), we get a palindrome (8796978).

The spelling of 1143567 in words is "one million, one hundred forty-three thousand, five hundred sixty-seven".