104021865 has 48 divisors (see below), whose sum is σ = 192067200. Its totient is φ = 51929856.

The previous prime is 104021849. The next prime is 104021891. The reversal of 104021865 is 568120401.

It is not a de Polignac number, because 104021865 - 2⁴ = 104021849 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 75412 + ... + 76778.

It is an arithmetic number, because the mean of its divisors is an integer number (4001400).

Almost surely, 2^104021865 is an apocalyptic number.

104021865 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

104021865 is a deficient number, since it is larger than the sum of its proper divisors (88045335).

104021865 is a wasteful number, since it uses less digits than its factorization.

104021865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1486 (or 1483 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 104021865 is about 10199.1109906697. The cubic root of 104021865 is about 470.2998916021.

The spelling of 104021865 in words is "one hundred four million, twenty-one thousand, eight hundred sixty-five".