104645 has 4 divisors (see below), whose sum is σ = 125580. Its totient is φ = 83712.

The previous prime is 104639. The next prime is 104651. The reversal of 104645 is 546401.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (104639) and next prime (104651).

It can be written as a sum of positive squares in 2 ways, for example, as 47524 + 57121 = 218^2 + 239^2 .

It is a cyclic number.

It is not a de Polignac number, because 104645 - 2¹² = 100549 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10460 + ... + 10469.

It is an arithmetic number, because the mean of its divisors is an integer number (31395).

2¹⁰⁴⁶⁴⁵ is an apocalyptic number.

It is an amenable number.

104645 is a deficient number, since it is larger than the sum of its proper divisors (20935).

104645 is an equidigital number, since it uses as much as digits as its factorization.

104645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20934.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 104645 is about 323.4887942418. The cubic root of 104645 is about 47.1237121089.

The spelling of 104645 in words is "one hundred four thousand, six hundred forty-five".