104643813 has 16 divisors (see below), whose sum is σ = 145860480. Its totient is φ = 66606144.

The previous prime is 104643769. The next prime is 104643829. The reversal of 104643813 is 318346401.

It is not a de Polignac number, because 104643813 - 2¹⁰ = 104642789 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (104643893) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49543 + ... + 51611.

It is an arithmetic number, because the mean of its divisors is an integer number (9116280).

Almost surely, 2^104643813 is an apocalyptic number.

It is an amenable number.

104643813 is a deficient number, since it is larger than the sum of its proper divisors (41216667).

104643813 is a wasteful number, since it uses less digits than its factorization.

104643813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2828.

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 104643813 is about 10229.5558554612. Note that the first 3 decimals coincide. The cubic root of 104643813 is about 471.2353393174.

The spelling of 104643813 in words is "one hundred four million, six hundred forty-three thousand, eight hundred thirteen".