105989718 has 32 divisors (see below), whose sum is σ = 218764800. Its totient is φ = 34216416.

The previous prime is 105989687. The next prime is 105989749. The reversal of 105989718 is 817989501.

It is an interprime number because it is at equal distance from previous prime (105989687) and next prime (105989749).

It is a super-2 number, since 2×105989718² = 22467640643439048, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23013 + ... + 27231.

It is an arithmetic number, because the mean of its divisors is an integer number (6836400).

Almost surely, 2^105989718 is an apocalyptic number.

105989718 is an abundant number, since it is smaller than the sum of its proper divisors (112775082).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

105989718 is a wasteful number, since it uses less digits than its factorization.

105989718 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4356.

The product of its (nonzero) digits is 181440, while the sum is 48.

The square root of 105989718 is about 10295.1307908156. The cubic root of 105989718 is about 473.2470464723.

The spelling of 105989718 in words is "one hundred five million, nine hundred eighty-nine thousand, seven hundred eighteen".