104987805 has 16 divisors (see below), whose sum is σ = 180902400. Its totient is φ = 51686208.

The previous prime is 104987803. The next prime is 104987807. The reversal of 104987805 is 508789401.

It is an interprime number because it is at equal distance from previous prime (104987803) and next prime (104987807).

It is not a de Polignac number, because 104987805 - 2¹ = 104987803 is a prime.

It is a super-2 number, since 2×104987805² = 22044878397436050, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (104987803) 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, 269005 + ... + 269394.

It is an arithmetic number, because the mean of its divisors is an integer number (11306400).

Almost surely, 2^104987805 is an apocalyptic number.

104987805 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

104987805 is a deficient number, since it is larger than the sum of its proper divisors (75914595).

104987805 is a wasteful number, since it uses less digits than its factorization.

104987805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 538420.

The product of its (nonzero) digits is 80640, while the sum is 42.

The square root of 104987805 is about 10246.3556936113. The cubic root of 104987805 is about 471.7511331093.

The spelling of 104987805 in words is "one hundred four million, nine hundred eighty-seven thousand, eight hundred five".