641343 has 8 divisors (see below), whose sum is σ = 867456. Its totient is φ = 421400.

The previous prime is 641327. The next prime is 641371. The reversal of 641343 is 343146.

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 641343 - 2⁴ = 641327 is a prime.

It is a super-2 number, since 2×641343² = 822641687298, which contains 22 as substring.

641343 is a lucky number.

It is a plaindrome in base 8.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641143) 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, 1293 + ... + 1718.

It is an arithmetic number, because the mean of its divisors is an integer number (108432).

2⁶⁴¹³⁴³ is an apocalyptic number.

641343 is a deficient number, since it is larger than the sum of its proper divisors (226113).

641343 is a wasteful number, since it uses less digits than its factorization.

641343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3085.

The product of its digits is 864, while the sum is 21.

The square root of 641343 is about 800.8389351174. The cubic root of 641343 is about 86.2376247735.

Adding to 641343 its reverse (343146), we get a palindrome (984489).

The spelling of 641343 in words is "six hundred forty-one thousand, three hundred forty-three".