641383 has 4 divisors (see below), whose sum is σ = 675160. Its totient is φ = 607608.

The previous prime is 641371. The next prime is 641387. The reversal of 641383 is 383146.

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 641383 - 2¹⁷ = 510311 is a prime.

It is a super-2 number, since 2×641383² = 822744305378, which contains 22 as substring.

It is a Duffinian number.

641383 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641387) 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 in 3 ways as a sum of consecutive naturals, for example, 16860 + ... + 16897.

It is an arithmetic number, because the mean of its divisors is an integer number (168790).

2⁶⁴¹³⁸³ is an apocalyptic number.

641383 is a deficient number, since it is larger than the sum of its proper divisors (33777).

641383 is a wasteful number, since it uses less digits than its factorization.

641383 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33776.

The product of its digits is 1728, while the sum is 25.

The square root of 641383 is about 800.8639085388. The cubic root of 641383 is about 86.2394175912.

It can be divided in two parts, 641 and 383, that added together give a 10-th power (1024 = 2¹⁰).

The spelling of 641383 in words is "six hundred forty-one thousand, three hundred eighty-three".