105687903 has 4 divisors (see below), whose sum is σ = 140917208. Its totient is φ = 70458600.

The previous prime is 105687889. The next prime is 105687979. The reversal of 105687903 is 309786501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 309786501 = 3 ⋅103262167.

It is not a de Polignac number, because 105687903 - 2⁴ = 105687887 is a prime.

It is a super-2 number, since 2×105687903² = 22339865681074818, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105687983) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17614648 + ... + 17614653.

It is an arithmetic number, because the mean of its divisors is an integer number (35229302).

Almost surely, 2^105687903 is an apocalyptic number.

105687903 is a deficient number, since it is larger than the sum of its proper divisors (35229305).

105687903 is an equidigital number, since it uses as much as digits as its factorization.

105687903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35229304.

The product of its (nonzero) digits is 45360, while the sum is 39.

The square root of 105687903 is about 10280.4621977808. The cubic root of 105687903 is about 472.7974152833.

The spelling of 105687903 in words is "one hundred five million, six hundred eighty-seven thousand, nine hundred three".