226664545 has 4 divisors (see below), whose sum is σ = 271997460. Its totient is φ = 181331632.

The previous prime is 226664533. The next prime is 226664549. The reversal of 226664545 is 545466622.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 545466622 = 2 ⋅272733311.

It can be written as a sum of positive squares in 2 ways, for example, as 118004769 + 108659776 = 10863^2 + 10424^2 .

It is a cyclic number.

It is not a de Polignac number, because 226664545 - 2¹¹ = 226662497 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 226664498 and 226664507.

It is not an unprimeable number, because it can be changed into a prime (226664549) 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, 22666450 + ... + 22666459.

It is an arithmetic number, because the mean of its divisors is an integer number (67999365).

Almost surely, 2^226664545 is an apocalyptic number.

It is an amenable number.

226664545 is a deficient number, since it is larger than the sum of its proper divisors (45332915).

226664545 is an equidigital number, since it uses as much as digits as its factorization.

226664545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45332914.

The product of its digits is 345600, while the sum is 40.

The square root of 226664545 is about 15055.3825922824. The cubic root of 226664545 is about 609.7163825313.

The spelling of 226664545 in words is "two hundred twenty-six million, six hundred sixty-four thousand, five hundred forty-five".