105998686 has 4 divisors (see below), whose sum is σ = 158998032. Its totient is φ = 52999342.

The previous prime is 105998647. The next prime is 105998687. The reversal of 105998686 is 686899501.

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

It is a super-2 number, since 2×105998686² = 22471442867453192, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105998687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26499670 + ... + 26499673.

It is an arithmetic number, because the mean of its divisors is an integer number (39749508).

Almost surely, 2^105998686 is an apocalyptic number.

105998686 is a deficient number, since it is larger than the sum of its proper divisors (52999346).

105998686 is an equidigital number, since it uses as much as digits as its factorization.

105998686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52999345.

The product of its (nonzero) digits is 933120, while the sum is 52.

The square root of 105998686 is about 10295.5663273081. The cubic root of 105998686 is about 473.2603935525.

The spelling of 105998686 in words is "one hundred five million, nine hundred ninety-eight thousand, six hundred eighty-six".