105639886 has 16 divisors (see below), whose sum is σ = 181964160. Its totient is φ = 45490680.

The previous prime is 105639883. The next prime is 105639907. The reversal of 105639886 is 688936501.

It is a super-2 number, since 2×105639886² = 22319571028185992, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105639881) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 125946 + ... + 126781.

It is an arithmetic number, because the mean of its divisors is an integer number (11372760).

Almost surely, 2^105639886 is an apocalyptic number.

105639886 is a deficient number, since it is larger than the sum of its proper divisors (76324274).

105639886 is a wasteful number, since it uses less digits than its factorization.

105639886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252759.

The product of its (nonzero) digits is 311040, while the sum is 46.

The square root of 105639886 is about 10278.1265802674. The cubic root of 105639886 is about 472.7258026963.

It can be divided in two parts, 10563 and 9886, that added together give a square (20449 = 143²).

The spelling of 105639886 in words is "one hundred five million, six hundred thirty-nine thousand, eight hundred eighty-six".