1144665 has 32 divisors (see below), whose sum is σ = 2083200. Its totient is φ = 596160.

The previous prime is 1144657. The next prime is 1144667. The reversal of 1144665 is 5664411.

It is not a de Polignac number, because 1144665 - 2³ = 1144657 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1144667) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8166 + ... + 8304.

It is an arithmetic number, because the mean of its divisors is an integer number (65100).

2^1144665 is an apocalyptic number.

1144665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1144665 is a deficient number, since it is larger than the sum of its proper divisors (938535).

1144665 is a wasteful number, since it uses less digits than its factorization.

1144665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214 (or 208 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 1144665 is about 1069.8901812803. The cubic root of 1144665 is about 104.6066918544.

It can be divided in two parts, 11446 and 65, that added together give a palindrome (11511).

The spelling of 1144665 in words is "one million, one hundred forty-four thousand, six hundred sixty-five".