112605821 has 6 divisors (see below), whose sum is σ = 113199390. Its totient is φ = 112013816.

The previous prime is 112605797. The next prime is 112605839. The reversal of 112605821 is 128506211.

It can be written as a sum of positive squares in only one way, i.e., 70744921 + 41860900 = 8411^2 + 6470^2 .

It is a de Polignac number, because none of the positive numbers 2^k-112605821 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 (112605881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 173720 + ... + 174366.

It is an arithmetic number, because the mean of its divisors is an integer number (18866565).

Almost surely, 2^112605821 is an apocalyptic number.

It is an amenable number.

112605821 is a deficient number, since it is larger than the sum of its proper divisors (593569).

112605821 is an frugal number, since it uses more digits than its factorization.

112605821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1563 (or 916 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 26.

The square root of 112605821 is about 10611.5889950563. The cubic root of 112605821 is about 482.8960064279.

The spelling of 112605821 in words is "one hundred twelve million, six hundred five thousand, eight hundred twenty-one".