641159 has 4 divisors (see below), whose sum is σ = 650016. Its totient is φ = 632304.

The previous prime is 641143. The next prime is 641167. The reversal of 641159 is 951146.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 641159 - 2⁴ = 641143 is a prime.

It is a super-2 number, since 2×641159² = 822169726562, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4319 + ... + 4464.

It is an arithmetic number, because the mean of its divisors is an integer number (162504).

2⁶⁴¹¹⁵⁹ is an apocalyptic number.

641159 is a deficient number, since it is larger than the sum of its proper divisors (8857).

641159 is an equidigital number, since it uses as much as digits as its factorization.

641159 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8856.

The product of its digits is 1080, while the sum is 26.

The square root of 641159 is about 800.7240473471. The cubic root of 641159 is about 86.2293768518.

The spelling of 641159 in words is "six hundred forty-one thousand, one hundred fifty-nine".