641226 has 8 divisors (see below), whose sum is σ = 1282464. Its totient is φ = 213740.

The previous prime is 641213. The next prime is 641227. The reversal of 641226 is 622146.

It is a happy number.

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

641226 is an admirable number.

It is a super-2 number, since 2×641226² = 822341566152, which contains 22 as substring.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 641226.

It is not an unprimeable number, because it can be changed into a prime (641227) 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, 53430 + ... + 53441.

It is an arithmetic number, because the mean of its divisors is an integer number (160308).

2⁶⁴¹²²⁶ is an apocalyptic number.

641226 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

641226 is a wasteful number, since it uses less digits than its factorization.

641226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106876.

The product of its digits is 576, while the sum is 21.

The square root of 641226 is about 800.7658833891. The cubic root of 641226 is about 86.2323803538.

The spelling of 641226 in words is "six hundred forty-one thousand, two hundred twenty-six".