226657641 has 32 divisors (see below), whose sum is σ = 355627008. Its totient is φ = 125723520.

The previous prime is 226657637. The next prime is 226657643. The reversal of 226657641 is 146756622.

It is not a de Polignac number, because 226657641 - 2² = 226657637 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 226657641.

It is not an unprimeable number, because it can be changed into a prime (226657643) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 128421 + ... + 130173.

It is an arithmetic number, because the mean of its divisors is an integer number (11113344).

Almost surely, 2^226657641 is an apocalyptic number.

226657641 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

226657641 is a deficient number, since it is larger than the sum of its proper divisors (128969367).

226657641 is a wasteful number, since it uses less digits than its factorization.

226657641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1941.

The product of its digits is 120960, while the sum is 39.

The square root of 226657641 is about 15055.1533037694. The cubic root of 226657641 is about 609.7101919959.

The spelling of 226657641 in words is "two hundred twenty-six million, six hundred fifty-seven thousand, six hundred forty-one".