226820785 has 8 divisors (see below), whose sum is σ = 272290536. Its totient is φ = 181386240.

The previous prime is 226820777. The next prime is 226820801. The reversal of 226820785 is 587028622.

It can be written as a sum of positive squares in 4 ways, for example, as 37015056 + 189805729 = 6084^2 + 13777^2 .

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

It is not a de Polignac number, because 226820785 - 2³ = 226820777 is a prime.

It is a Duffinian 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, 8455 + ... + 22915.

It is an arithmetic number, because the mean of its divisors is an integer number (34036317).

Almost surely, 2^226820785 is an apocalyptic number.

It is an amenable number.

226820785 is a deficient number, since it is larger than the sum of its proper divisors (45469751).

226820785 is a wasteful number, since it uses less digits than its factorization.

226820785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17603.

The product of its (nonzero) digits is 107520, while the sum is 40.

The square root of 226820785 is about 15060.5705403215. The cubic root of 226820785 is about 609.8564429716.

The spelling of 226820785 in words is "two hundred twenty-six million, eight hundred twenty thousand, seven hundred eighty-five".