111660628 has 12 divisors (see below), whose sum is σ = 195480180. Its totient is φ = 55809152.

The previous prime is 111660541. The next prime is 111660697. The reversal of 111660628 is 826066111.

It can be written as a sum of positive squares in 2 ways, for example, as 24088464 + 87572164 = 4908^2 + 9358^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 111660628.

It is a congruent number.

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, 17250 + ... + 22822.

It is an arithmetic number, because the mean of its divisors is an integer number (16290015).

Almost surely, 2^111660628 is an apocalyptic number.

It is an amenable number.

111660628 is a deficient number, since it is larger than the sum of its proper divisors (83819552).

111660628 is a wasteful number, since it uses less digits than its factorization.

111660628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10586 (or 10584 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 111660628 is about 10566.9592598817. The cubic root of 111660628 is about 481.5410943009.

The spelling of 111660628 in words is "one hundred eleven million, six hundred sixty thousand, six hundred twenty-eight".