112509665 has 4 divisors (see below), whose sum is σ = 135011604. Its totient is φ = 90007728.

The previous prime is 112509641. The next prime is 112509671. The reversal of 112509665 is 566905211.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 77035729 + 35473936 = 8777^2 + 5956^2 .

It is a cyclic number.

It is not a de Polignac number, because 112509665 - 2⁶ = 112509601 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11250962 + ... + 11250971.

It is an arithmetic number, because the mean of its divisors is an integer number (33752901).

Almost surely, 2^112509665 is an apocalyptic number.

It is an amenable number.

112509665 is a deficient number, since it is larger than the sum of its proper divisors (22501939).

112509665 is an equidigital number, since it uses as much as digits as its factorization.

112509665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22501938.

The product of its (nonzero) digits is 16200, while the sum is 35.

The square root of 112509665 is about 10607.0573204824. The cubic root of 112509665 is about 482.7585162846.

The spelling of 112509665 in words is "one hundred twelve million, five hundred nine thousand, six hundred sixty-five".