111741985 has 8 divisors (see below), whose sum is σ = 134147880. Its totient is φ = 89355264.

The previous prime is 111741977. The next prime is 111741991. The reversal of 111741985 is 589147111.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 12061729 + 99680256 = 3473^2 + 9984^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 111741985 - 2³ = 111741977 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17281 + ... + 22849.

It is an arithmetic number, because the mean of its divisors is an integer number (16768485).

Almost surely, 2^111741985 is an apocalyptic number.

It is an amenable number.

111741985 is a deficient number, since it is larger than the sum of its proper divisors (22405895).

111741985 is an equidigital number, since it uses as much as digits as its factorization.

111741985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9587.

The product of its digits is 10080, while the sum is 37.

The square root of 111741985 is about 10570.8081526438. The cubic root of 111741985 is about 481.6580177218.

The spelling of 111741985 in words is "one hundred eleven million, seven hundred forty-one thousand, nine hundred eighty-five".