105871887 has 32 divisors (see below), whose sum is σ = 172085760. Its totient is φ = 63797760.

The previous prime is 105871867. The next prime is 105871939. The reversal of 105871887 is 788178501.

It is not a de Polignac number, because 105871887 - 2⁶ = 105871823 is a prime.

It is a super-2 number, since 2×105871887² = 22417712913881538, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105871807) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 56398 + ... + 58244.

It is an arithmetic number, because the mean of its divisors is an integer number (5377680).

Almost surely, 2^105871887 is an apocalyptic number.

105871887 is a deficient number, since it is larger than the sum of its proper divisors (66213873).

105871887 is a wasteful number, since it uses less digits than its factorization.

105871887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2060 (or 2054 counting only the distinct ones).

The product of its (nonzero) digits is 125440, while the sum is 45.

The square root of 105871887 is about 10289.4065426535. The cubic root of 105871887 is about 473.0716085432.

The spelling of 105871887 in words is "one hundred five million, eight hundred seventy-one thousand, eight hundred eighty-seven".