641862222 has 8 divisors (see below), whose sum is σ = 1283724456. Its totient is φ = 213954072.

The previous prime is 641862197. The next prime is 641862259. The reversal of 641862222 is 222268146.

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

641862222 is an admirable number.

It is a super-2 number, since 2×641862222² = 823974224061554568, which contains 22 as substring.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 53488513 + ... + 53488524.

It is an arithmetic number, because the mean of its divisors is an integer number (160465557).

Almost surely, 2^641862222 is an apocalyptic number.

641862222 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.

641862222 is a wasteful number, since it uses less digits than its factorization.

641862222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106977042.

The product of its digits is 18432, while the sum is 33.

The square root of 641862222 is about 25334.9999407934. Note that the first 4 decimals coincide. The cubic root of 641862222 is about 862.6089073988.

The spelling of 641862222 in words is "six hundred forty-one million, eight hundred sixty-two thousand, two hundred twenty-two".