104251687 has 4 divisors (see below), whose sum is σ = 106469856. Its totient is φ = 102033520.

The previous prime is 104251669. The next prime is 104251691. The reversal of 104251687 is 786152401.

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

It is a cyclic number.

It is not a de Polignac number, because 104251687 - 2⁷ = 104251559 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (104251187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1109014 + ... + 1109107.

It is an arithmetic number, because the mean of its divisors is an integer number (26617464).

Almost surely, 2^104251687 is an apocalyptic number.

104251687 is a deficient number, since it is larger than the sum of its proper divisors (2218169).

104251687 is an equidigital number, since it uses as much as digits as its factorization.

104251687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2218168.

The product of its (nonzero) digits is 13440, while the sum is 34.

The square root of 104251687 is about 10210.3715407423. The cubic root of 104251687 is about 470.6459911438.

The spelling of 104251687 in words is "one hundred four million, two hundred fifty-one thousand, six hundred eighty-seven".