105326987 has 4 divisors (see below), whose sum is σ = 106660320. Its totient is φ = 103993656.

The previous prime is 105326981. The next prime is 105326989. The reversal of 105326987 is 789623501.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 105326987 - 2⁴ = 105326971 is a prime.

It is a super-2 number, since 2×105326987² = 22187548380996338, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (105326981) 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, 666548 + ... + 666705.

It is an arithmetic number, because the mean of its divisors is an integer number (26665080).

Almost surely, 2^105326987 is an apocalyptic number.

105326987 is a deficient number, since it is larger than the sum of its proper divisors (1333333).

105326987 is an equidigital number, since it uses as much as digits as its factorization.

105326987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1333332.

The product of its (nonzero) digits is 90720, while the sum is 41.

The square root of 105326987 is about 10262.8936952499. The cubic root of 105326987 is about 472.2586126471.

The spelling of 105326987 in words is "one hundred five million, three hundred twenty-six thousand, nine hundred eighty-seven".