226006781 has 16 divisors (see below), whose sum is σ = 303451008. Its totient is φ = 162561600.

The previous prime is 226006747. The next prime is 226006811. The reversal of 226006781 is 187600622.

It is a cyclic number.

It is not a de Polignac number, because 226006781 - 2¹⁰ = 226005757 is a prime.

It is a super-2 number, since 2×226006781² = 102158130115963922, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (226006181) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 111890 + ... + 113891.

It is an arithmetic number, because the mean of its divisors is an integer number (18965688).

Almost surely, 2^226006781 is an apocalyptic number.

It is an amenable number.

226006781 is a deficient number, since it is larger than the sum of its proper divisors (77444227).

226006781 is a wasteful number, since it uses less digits than its factorization.

226006781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225812.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 226006781 is about 15033.5219093864. The cubic root of 226006781 is about 609.1260269288.

The spelling of 226006781 in words is "two hundred twenty-six million, six thousand, seven hundred eighty-one".