641172224 has 108 divisors (see below), whose sum is σ = 1608276432. Its totient is φ = 249722880.

The previous prime is 641172199. The next prime is 641172239. The reversal of 641172224 is 422271146.

It is a super-2 number, since 2×641172224² = 822203641658212352, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 215354 + ... + 218310.

Almost surely, 2^641172224 is an apocalyptic number.

641172224 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 641172224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (804138216).

641172224 is an abundant number, since it is smaller than the sum of its proper divisors (967104208).

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

641172224 is a wasteful number, since it uses less digits than its factorization.

641172224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3002 (or 2977 counting only the distinct ones).

The product of its digits is 5376, while the sum is 29.

The square root of 641172224 is about 25321.3787934228. The cubic root of 641172224 is about 862.2996967893.

The spelling of 641172224 in words is "six hundred forty-one million, one hundred seventy-two thousand, two hundred twenty-four".