104845 has 8 divisors (see below), whose sum is σ = 135576. Its totient is φ = 77376.

The previous prime is 104831. The next prime is 104849. The reversal of 104845 is 548401.

It can be written as a sum of positive squares in 4 ways, for example, as 3721 + 101124 = 61^2 + 318^2 .

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

It is not a de Polignac number, because 104845 - 2⁷ = 104717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (104849) 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, 742 + ... + 871.

It is an arithmetic number, because the mean of its divisors is an integer number (16947).

2¹⁰⁴⁸⁴⁵ is an apocalyptic number.

It is an amenable number.

104845 is a deficient number, since it is larger than the sum of its proper divisors (30731).

104845 is a wasteful number, since it uses less digits than its factorization.

104845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1631.

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 104845 is about 323.7977763976. The cubic root of 104845 is about 47.1537143213.

Subtracting 104845 from its reverse (548401), we obtain a square (443556 = 666²).

It can be divided in two parts, 104 and 845, that added together give a palindrome (949).

The spelling of 104845 in words is "one hundred four thousand, eight hundred forty-five".