111680645 has 8 divisors (see below), whose sum is σ = 134082456. Its totient is φ = 89300736.

The previous prime is 111680629. The next prime is 111680677. The reversal of 111680645 is 546086111.

It can be written as a sum of positive squares in 4 ways, for example, as 24930049 + 86750596 = 4993^2 + 9314^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 111680645 - 2⁴ = 111680629 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9449 + ... + 17681.

It is an arithmetic number, because the mean of its divisors is an integer number (16760307).

Almost surely, 2^111680645 is an apocalyptic number.

It is an amenable number.

111680645 is a deficient number, since it is larger than the sum of its proper divisors (22401811).

111680645 is an equidigital number, since it uses as much as digits as its factorization.

111680645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10951.

The product of its (nonzero) digits is 5760, while the sum is 32.

The square root of 111680645 is about 10567.9063678668. The cubic root of 111680645 is about 481.5698672961.

The spelling of 111680645 in words is "one hundred eleven million, six hundred eighty thousand, six hundred forty-five".