1144645 has 4 divisors (see below), whose sum is σ = 1373580. Its totient is φ = 915712.

The previous prime is 1144643. The next prime is 1144657. The reversal of 1144645 is 5464411.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 580644 + 564001 = 762^2 + 751^2 .

It is a cyclic number.

It is not a de Polignac number, because 1144645 - 2¹ = 1144643 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1144643) 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, 114460 + ... + 114469.

It is an arithmetic number, because the mean of its divisors is an integer number (343395).

2^1144645 is an apocalyptic number.

It is an amenable number.

1144645 is a deficient number, since it is larger than the sum of its proper divisors (228935).

1144645 is an equidigital number, since it uses as much as digits as its factorization.

1144645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228934.

The product of its digits is 1920, while the sum is 25.

The square root of 1144645 is about 1069.8808344858. The cubic root of 1144645 is about 104.6060826088.

The spelling of 1144645 in words is "one million, one hundred forty-four thousand, six hundred forty-five".