111061680 has 160 divisors (see below), whose sum is σ = 368976384. Its totient is φ = 27537408.

The previous prime is 111061651. The next prime is 111061681. The reversal of 111061680 is 86160111.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 111061680.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111061681) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 664957 + ... + 665123.

Almost surely, 2^111061680 is an apocalyptic number.

111061680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 111061680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (184488192).

111061680 is an abundant number, since it is smaller than the sum of its proper divisors (257914704).

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

111061680 is a wasteful number, since it uses less digits than its factorization.

111061680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363 (or 357 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 24.

The square root of 111061680 is about 10538.5805495807. The cubic root of 111061680 is about 480.6785541956.

The spelling of 111061680 in words is "one hundred eleven million, sixty-one thousand, six hundred eighty".