641343535 has 8 divisors (see below), whose sum is σ = 879556896. Its totient is φ = 439778400.

The previous prime is 641343517. The next prime is 641343539. The reversal of 641343535 is 535343146.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 641343535 - 2⁵ = 641343503 is a prime.

It is a super-2 number, since 2×641343535² = 822643059772592450, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 641343535.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641343539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9162016 + ... + 9162085.

It is an arithmetic number, because the mean of its divisors is an integer number (109944612).

Almost surely, 2^641343535 is an apocalyptic number.

641343535 is a deficient number, since it is larger than the sum of its proper divisors (238213361).

641343535 is a wasteful number, since it uses less digits than its factorization.

641343535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18324113.

The product of its digits is 64800, while the sum is 34.

The square root of 641343535 is about 25324.7613019353. The cubic root of 641343535 is about 862.3764875295.

The spelling of 641343535 in words is "six hundred forty-one million, three hundred forty-three thousand, five hundred thirty-five".