641413 has 2 divisors, whose sum is σ = 641414. Its totient is φ = 641412.

The previous prime is 641411. The next prime is 641419. The reversal of 641413 is 314146.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 431649 + 209764 = 657^2 + 458^2 .

It is a cyclic number.

It is not a de Polignac number, because 641413 - 2¹ = 641411 is a prime.

It is a super-2 number, since 2×641413² = 822821273138, which contains 22 as substring.

Together with 641411, it forms a pair of twin primes.

641413 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (641411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 320706 + 320707.

It is an arithmetic number, because the mean of its divisors is an integer number (320707).

2⁶⁴¹⁴¹³ is an apocalyptic number.

It is an amenable number.

641413 is a deficient number, since it is larger than the sum of its proper divisors (1).

641413 is an equidigital number, since it uses as much as digits as its factorization.

641413 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 288, while the sum is 19.

The square root of 641413 is about 800.8826380937. The cubic root of 641413 is about 86.2407621556.

Adding to 641413 its reverse (314146), we get a palindrome (955559).

The spelling of 641413 in words is "six hundred forty-one thousand, four hundred thirteen".