1144605 has 32 divisors (see below), whose sum is σ = 2285568. Its totient is φ = 475200.

The previous prime is 1144603. The next prime is 1144607. The reversal of 1144605 is 5064411.

It is an interprime number because it is at equal distance from previous prime (1144603) and next prime (1144607).

It is not a de Polignac number, because 1144605 - 2¹ = 1144603 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an Ulam number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1144603) 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, 660 + ... + 1650.

It is an arithmetic number, because the mean of its divisors is an integer number (71424).

2^1144605 is an apocalyptic number.

1144605 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1144605 is a deficient number, since it is larger than the sum of its proper divisors (1140963).

1144605 is a wasteful number, since it uses less digits than its factorization.

1144605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1017.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 1144605 is about 1069.8621406518. The cubic root of 1144605 is about 104.6048640965.

The spelling of 1144605 in words is "one million, one hundred forty-four thousand, six hundred five".