226840657 has 2 divisors, whose sum is σ = 226840658. Its totient is φ = 226840656.

The previous prime is 226840643. The next prime is 226840661. The reversal of 226840657 is 756048622.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 126360081 + 100480576 = 11241^2 + 10024^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-226840657 is a prime.

It is not a weakly prime, because it can be changed into another prime (226840687) 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 as a sum of consecutive naturals, namely, 113420328 + 113420329.

It is an arithmetic number, because the mean of its divisors is an integer number (113420329).

Almost surely, 2^226840657 is an apocalyptic number.

It is an amenable number.

226840657 is a deficient number, since it is larger than the sum of its proper divisors (1).

226840657 is an equidigital number, since it uses as much as digits as its factorization.

226840657 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 161280, while the sum is 40.

The square root of 226840657 is about 15061.2302618345. The cubic root of 226840657 is about 609.8742524995.

The spelling of 226840657 in words is "two hundred twenty-six million, eight hundred forty thousand, six hundred fifty-seven".