1103645 has 8 divisors (see below), whose sum is σ = 1337856. Its totient is φ = 873936.

The previous prime is 1103639. The next prime is 1103699. The reversal of 1103645 is 5463011.

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

It is a cyclic number.

It is not a de Polignac number, because 1103645 - 2⁴ = 1103629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 557 + ... + 1586.

It is an arithmetic number, because the mean of its divisors is an integer number (167232).

2^1103645 is an apocalyptic number.

It is an amenable number.

1103645 is a deficient number, since it is larger than the sum of its proper divisors (234211).

1103645 is a wasteful number, since it uses less digits than its factorization.

1103645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2251.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 1103645 is about 1050.5450966046. The cubic root of 1103645 is about 103.3419058676.

Adding to 1103645 its reverse (5463011), we get a palindrome (6566656).

The spelling of 1103645 in words is "one million, one hundred three thousand, six hundred forty-five".