1144765 has 4 divisors (see below), whose sum is σ = 1373724. Its totient is φ = 915808.

The previous prime is 1144757. The next prime is 1144783. The reversal of 1144765 is 5674411.

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 558009 + 586756 = 747^2 + 766^2 .

It is a cyclic number.

It is not a de Polignac number, because 1144765 - 2³ = 1144757 is a prime.

It is a Duffinian number.

1144765 is a lucky number.

It is a plaindrome in base 16.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 114472 + ... + 114481.

It is an arithmetic number, because the mean of its divisors is an integer number (343431).

2^1144765 is an apocalyptic number.

It is an amenable number.

1144765 is a deficient number, since it is larger than the sum of its proper divisors (228959).

1144765 is an equidigital number, since it uses as much as digits as its factorization.

1144765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228958.

The product of its digits is 3360, while the sum is 28.

The square root of 1144765 is about 1069.9369140281. The cubic root of 1144765 is about 104.6097379754.

It can be divided in two parts, 114476 and 5, that added together give a triangular number (114481 = T₄₇₈).

The spelling of 1144765 in words is "one million, one hundred forty-four thousand, seven hundred sixty-five".