641341117 has 2 divisors, whose sum is σ = 641341118. Its totient is φ = 641341116.

The previous prime is 641341111. The next prime is 641341153. The reversal of 641341117 is 711143146.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 548777476 + 92563641 = 23426^2 + 9621^2 .

It is a cyclic number.

It is not a de Polignac number, because 641341117 - 2¹⁹ = 640816829 is a prime.

It is a super-2 number, since 2×641341117² = 822636856709615378, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (641341111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 320670558 + 320670559.

It is an arithmetic number, because the mean of its divisors is an integer number (320670559).

Almost surely, 2^641341117 is an apocalyptic number.

It is an amenable number.

641341117 is a deficient number, since it is larger than the sum of its proper divisors (1).

641341117 is an equidigital number, since it uses as much as digits as its factorization.

641341117 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2016, while the sum is 28.

The square root of 641341117 is about 25324.7135620524. The cubic root of 641341117 is about 862.3754037479.

The spelling of 641341117 in words is "six hundred forty-one million, three hundred forty-one thousand, one hundred seventeen".