641126217 has 8 divisors (see below), whose sum is σ = 855869440. Its totient is φ = 426900240.

The previous prime is 641126207. The next prime is 641126231. The reversal of 641126217 is 712621146.

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

It is not a de Polignac number, because 641126217 - 2⁷ = 641126089 is a prime.

It is a super-2 number, since 2×641126217² = 822085652249462178, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (641126207) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 126409 + ... + 131382.

It is an arithmetic number, because the mean of its divisors is an integer number (106983680).

Almost surely, 2^641126217 is an apocalyptic number.

It is an amenable number.

641126217 is a deficient number, since it is larger than the sum of its proper divisors (214743223).

641126217 is a wasteful number, since it uses less digits than its factorization.

641126217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258623.

The product of its digits is 4032, while the sum is 30.

The square root of 641126217 is about 25320.4703155372. The cubic root of 641126217 is about 862.2790716647.

The spelling of 641126217 in words is "six hundred forty-one million, one hundred twenty-six thousand, two hundred seventeen".