641371 has 2 divisors, whose sum is σ = 641372.
Its totient is φ = 641370.
The previous prime is 641327. The next prime is 641387. The reversal of 641371 is 173146.
It is a strong prime.
It is a cyclic number.
It is not a de Polignac number, because 641371 - 29 = 640859 is a prime.
It is a super-2 number, since 2×6413712 = 822713519282, which contains 22 as substring.
It is a Chen prime.
It is an Ulam number.
It is not a weakly prime, because it can be changed into another prime (641471) by changing a digit.
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 as a sum of consecutive naturals, namely, 320685 + 320686.
It is an arithmetic number, because the mean of its divisors is an integer number (320686).
2641371 is an apocalyptic number.
641371 is a deficient number, since it is larger than the sum of its proper divisors (1).
641371 is an equidigital number, since it uses as much as digits as its factorization.
641371 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 504, while the sum is 22.
The square root of 641371 is about 800.8564165941.
The cubic root of 641371 is about 86.2388797537.
The spelling of 641371 in words is "six hundred forty-one thousand, three hundred seventy-one".