111520666 has 8 divisors (see below), whose sum is σ = 169398720. Its totient is φ = 55054428.

The previous prime is 111520637. The next prime is 111520687. The reversal of 111520666 is 666025111.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 352756 + ... + 353071.

It is an arithmetic number, because the mean of its divisors is an integer number (21174840).

Almost surely, 2^111520666 is an apocalyptic number.

111520666 is a deficient number, since it is larger than the sum of its proper divisors (57878054).

111520666 is an equidigital number, since it uses as much as digits as its factorization.

111520666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 705908.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 111520666 is about 10560.3345590942. The cubic root of 111520666 is about 481.3398128661.

Adding to 111520666 its reverse (666025111), we get a palindrome (777545777).

The spelling of 111520666 in words is "one hundred eleven million, five hundred twenty thousand, six hundred sixty-six".