226645681 has 8 divisors (see below), whose sum is σ = 234835200. Its totient is φ = 218511120.

The previous prime is 226645669. The next prime is 226645687. The reversal of 226645681 is 186546622.

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

It is a cyclic number.

It is not a de Polignac number, because 226645681 - 2²³ = 218257073 is a prime.

It is a super-2 number, since 2×226645681² = 102736529431907522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (226645687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5251 + ... + 21928.

It is an arithmetic number, because the mean of its divisors is an integer number (29354400).

Almost surely, 2^226645681 is an apocalyptic number.

It is an amenable number.

226645681 is a deficient number, since it is larger than the sum of its proper divisors (8189519).

226645681 is a wasteful number, since it uses less digits than its factorization.

226645681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27479.

The product of its digits is 138240, while the sum is 40.

The square root of 226645681 is about 15054.7560923450. The cubic root of 226645681 is about 609.6994676540.

The spelling of 226645681 in words is "two hundred twenty-six million, six hundred forty-five thousand, six hundred eighty-one".