641593 has 4 divisors (see below), whose sum is σ = 643968. Its totient is φ = 639220.

The previous prime is 641581. The next prime is 641623. The reversal of 641593 is 395146.

641593 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 395146 = 2 ⋅197573.

It is a cyclic number.

It is not a de Polignac number, because 641593 - 2¹³ = 633401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (641513) 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, 721 + ... + 1342.

It is an arithmetic number, because the mean of its divisors is an integer number (160992).

2⁶⁴¹⁵⁹³ is an apocalyptic number.

It is an amenable number.

641593 is a deficient number, since it is larger than the sum of its proper divisors (2375).

641593 is a wasteful number, since it uses less digits than its factorization.

641593 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2374.

The product of its digits is 3240, while the sum is 28.

The square root of 641593 is about 800.9950062266. The cubic root of 641593 is about 86.2488286615.

The spelling of 641593 in words is "six hundred forty-one thousand, five hundred ninety-three".