111707661 has 8 divisors (see below), whose sum is σ = 160400800. Its totient is φ = 68743152.

The previous prime is 111707647. The next prime is 111707677. The reversal of 111707661 is 166707111.

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

It is not a de Polignac number, because 111707661 - 2⁹ = 111707149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111707621) by changing a digit.

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, 1432111 + ... + 1432188.

It is an arithmetic number, because the mean of its divisors is an integer number (20050100).

Almost surely, 2^111707661 is an apocalyptic number.

It is an amenable number.

111707661 is a deficient number, since it is larger than the sum of its proper divisors (48693139).

111707661 is a wasteful number, since it uses less digits than its factorization.

111707661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2864315.

The product of its (nonzero) digits is 1764, while the sum is 30.

The square root of 111707661 is about 10569.1845002346. The cubic root of 111707661 is about 481.6086953987.

The spelling of 111707661 in words is "one hundred eleven million, seven hundred seven thousand, six hundred sixty-one".