641171 has 8 divisors (see below), whose sum is σ = 681504. Its totient is φ = 601920.

The previous prime is 641167. The next prime is 641197. The reversal of 641171 is 171146.

641171 = 71² + 72² + ... + 131².

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 641171 - 2² = 641167 is a prime.

It is a super-2 number, since 2×641171² = 822200502482, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (641101) 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, 1175 + ... + 1631.

It is an arithmetic number, because the mean of its divisors is an integer number (85188).

2⁶⁴¹¹⁷¹ is an apocalyptic number.

641171 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

641171 is a deficient number, since it is larger than the sum of its proper divisors (40333).

641171 is a wasteful number, since it uses less digits than its factorization.

641171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 541.

The product of its digits is 168, while the sum is 20.

The square root of 641171 is about 800.7315405303. The cubic root of 641171 is about 86.2299148078.

The spelling of 641171 in words is "six hundred forty-one thousand, one hundred seventy-one".