1143645 has 8 divisors (see below), whose sum is σ = 1829856. Its totient is φ = 609936.

The previous prime is 1143643. The next prime is 1143647. The reversal of 1143645 is 5463411.

It is an interprime number because it is at equal distance from previous prime (1143643) and next prime (1143647).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1143645 - 2¹ = 1143643 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38107 + ... + 38136.

It is an arithmetic number, because the mean of its divisors is an integer number (228732).

2^1143645 is an apocalyptic number.

1143645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1143645 is a deficient number, since it is larger than the sum of its proper divisors (686211).

1143645 is an equidigital number, since it uses as much as digits as its factorization.

1143645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76251.

The product of its digits is 1440, while the sum is 24.

The square root of 1143645 is about 1069.4133906025. The cubic root of 1143645 is about 104.5756112808.

The spelling of 1143645 in words is "one million, one hundred forty-three thousand, six hundred forty-five".