641259 has 12 divisors (see below), whose sum is σ = 948376. Its totient is φ = 417312.

The previous prime is 641239. The next prime is 641261. The reversal of 641259 is 952146.

It is not a de Polignac number, because 641259 - 2⁵ = 641227 is a prime.

It is a super-2 number, since 2×641259² = 822426210162, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (641239) 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 11 ways as a sum of consecutive naturals, for example, 442 + ... + 1215.

2⁶⁴¹²⁵⁹ is an apocalyptic number.

641259 is a deficient number, since it is larger than the sum of its proper divisors (307117).

641259 is a wasteful number, since it uses less digits than its factorization.

641259 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1706 (or 1703 counting only the distinct ones).

The product of its digits is 2160, while the sum is 27.

The square root of 641259 is about 800.7864883975. The cubic root of 641259 is about 86.2338596137.

It can be divided in two parts, 641 and 259, that added together give a square (900 = 30²).

The spelling of 641259 in words is "six hundred forty-one thousand, two hundred fifty-nine".