641358 has 40 divisors (see below), whose sum is σ = 1489752. Its totient is φ = 206064.

The previous prime is 641327. The next prime is 641371. The reversal of 641358 is 853146.

641358 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×641358² = 822680168328, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 641358.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 5941 + ... + 6047.

2⁶⁴¹³⁵⁸ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 641358, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (744876).

641358 is an abundant number, since it is smaller than the sum of its proper divisors (848394).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

641358 is a wasteful number, since it uses less digits than its factorization.

641358 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158 (or 149 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 641358 is about 800.8483002417. The cubic root of 641358 is about 86.2382970889.

It can be divided in two parts, 641 and 358, that added together give a palindrome (999).

The spelling of 641358 in words is "six hundred forty-one thousand, three hundred fifty-eight".