111506604 has 144 divisors (see below), whose sum is σ = 313582080. Its totient is φ = 30551040.

The previous prime is 111506569. The next prime is 111506617. The reversal of 111506604 is 406605111.

It is a super-2 number, since 2×111506604² = 24867445471225632, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1411437 + ... + 1411515.

Almost surely, 2^111506604 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 111506604, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (156791040).

111506604 is an abundant number, since it is smaller than the sum of its proper divisors (202075476).

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

111506604 is a wasteful number, since it uses less digits than its factorization.

111506604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168 (or 149 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 111506604 is about 10559.6687448045. The cubic root of 111506604 is about 481.3195807865.

The spelling of 111506604 in words is "one hundred eleven million, five hundred six thousand, six hundred four".