105686287 has 24 divisors (see below), whose sum is σ = 126403200. Its totient is φ = 88076016.

The previous prime is 105686281. The next prime is 105686327. The reversal of 105686287 is 782686501.

It is a de Polignac number, because none of the positive numbers 2^k-105686287 is a prime.

It is a super-2 number, since 2×105686287² = 22339182519692738, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105686281) 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 23 ways as a sum of consecutive naturals, for example, 401718 + ... + 401980.

It is an arithmetic number, because the mean of its divisors is an integer number (5266800).

Almost surely, 2^105686287 is an apocalyptic number.

105686287 is a deficient number, since it is larger than the sum of its proper divisors (20716913).

105686287 is a wasteful number, since it uses less digits than its factorization.

105686287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 475 (or 468 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 43.

The square root of 105686287 is about 10280.3836017923. The cubic root of 105686287 is about 472.7950055325.

The spelling of 105686287 in words is "one hundred five million, six hundred eighty-six thousand, two hundred eighty-seven".