641271 has 8 divisors (see below), whose sum is σ = 869760. Its totient is φ = 420152.

The previous prime is 641261. The next prime is 641279. The reversal of 641271 is 172146.

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

It is a cyclic number.

It is not a de Polignac number, because 641271 - 2⁵ = 641239 is a prime.

It is a super-2 number, since 2×641271² = 822456990882, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641279) 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, 1635 + ... + 1988.

It is an arithmetic number, because the mean of its divisors is an integer number (108720).

2⁶⁴¹²⁷¹ is an apocalyptic number.

641271 is a deficient number, since it is larger than the sum of its proper divisors (228489).

641271 is a wasteful number, since it uses less digits than its factorization.

641271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3685.

The product of its digits is 336, while the sum is 21.

The square root of 641271 is about 800.7939809964. The cubic root of 641271 is about 86.2343975138.

The spelling of 641271 in words is "six hundred forty-one thousand, two hundred seventy-one".