111117660 has 48 divisors (see below), whose sum is σ = 319544736. Its totient is φ = 28829952.

The previous prime is 111117641. The next prime is 111117673. The reversal of 111117660 is 66711111.

It is a self number, because there is not a number n which added to its sum of digits gives 111117660.

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, 22807 + ... + 27246.

It is an arithmetic number, because the mean of its divisors is an integer number (6657182).

Almost surely, 2^111117660 is an apocalyptic number.

111117660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111117660 is an abundant number, since it is smaller than the sum of its proper divisors (208427076).

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

111117660 is a wasteful number, since it uses less digits than its factorization.

111117660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50102 (or 50100 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 24.

The square root of 111117660 is about 10541.2361703929. The cubic root of 111117660 is about 480.7593017158.

Adding to 111117660 its reverse (66711111), we get a palindrome (177828771).

The spelling of 111117660 in words is "one hundred eleven million, one hundred seventeen thousand, six hundred sixty".