105986506 has 8 divisors (see below), whose sum is σ = 159043140. Its totient is φ = 52972128.

The previous prime is 105986501. The next prime is 105986513. The reversal of 105986506 is 605689501.

It can be written as a sum of positive squares in 2 ways, for example, as 105575625 + 410881 = 10275^2 + 641^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×105986506² = 22466278908176072, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (105986501) 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, 3291 + ... + 14926.

Almost surely, 2^105986506 is an apocalyptic number.

105986506 is a deficient number, since it is larger than the sum of its proper divisors (53056634).

105986506 is a wasteful number, since it uses less digits than its factorization.

105986506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21128.

The product of its (nonzero) digits is 64800, while the sum is 40.

The square root of 105986506 is about 10294.9747935583. The cubic root of 105986506 is about 473.2422658674.

The spelling of 105986506 in words is "one hundred five million, nine hundred eighty-six thousand, five hundred six".