226665013 has 4 divisors (see below), whose sum is σ = 227273068. Its totient is φ = 226056960.

The previous prime is 226664989. The next prime is 226665031. The reversal of 226665013 is 310566622.

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 178543044 + 48121969 = 13362^2 + 6937^2 .

It is a cyclic number.

It is not a de Polignac number, because 226665013 - 2⁵ = 226664981 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 (226665053) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 303468 + ... + 304213.

It is an arithmetic number, because the mean of its divisors is an integer number (56818267).

Almost surely, 2^226665013 is an apocalyptic number.

It is an amenable number.

226665013 is a deficient number, since it is larger than the sum of its proper divisors (608055).

226665013 is an equidigital number, since it uses as much as digits as its factorization.

226665013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 608054.

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 226665013 is about 15055.3981348884. The cubic root of 226665013 is about 609.7168021633.

The spelling of 226665013 in words is "two hundred twenty-six million, six hundred sixty-five thousand, thirteen".