1144785 has 16 divisors (see below), whose sum is σ = 1846656. Its totient is φ = 605568.

The previous prime is 1144783. The next prime is 1144823. The reversal of 1144785 is 5874411.

It is not a de Polignac number, because 1144785 - 2¹ = 1144783 is a prime.

It is a Curzon number.

1144785 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1144783) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2277 + ... + 2733.

It is an arithmetic number, because the mean of its divisors is an integer number (115416).

2^1144785 is an apocalyptic number.

1144785 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1144785 is a deficient number, since it is larger than the sum of its proper divisors (701871).

1144785 is a wasteful number, since it uses less digits than its factorization.

1144785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 632.

The product of its digits is 4480, while the sum is 30.

The square root of 1144785 is about 1069.9462603327. The cubic root of 1144785 is about 104.6103471784.

It can be divided in two parts, 114 and 4785, that multiplied together give a triangular number (545490 = T₁₀₄₄).

The spelling of 1144785 in words is "one million, one hundred forty-four thousand, seven hundred eighty-five".