641317 has 2 divisors, whose sum is σ = 641318. Its totient is φ = 641316.

The previous prime is 641299. The next prime is 641327. The reversal of 641317 is 713146.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 638401 + 2916 = 799^2 + 54^2 .

It is a cyclic number.

It is not a de Polignac number, because 641317 - 2¹¹ = 639269 is a prime.

It is a super-2 number, since 2×641317² = 822574988978, which contains 22 as substring.

It is a plaindrome in base 8.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (641327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 320658 + 320659.

It is an arithmetic number, because the mean of its divisors is an integer number (320659).

2⁶⁴¹³¹⁷ is an apocalyptic number.

It is an amenable number.

641317 is a deficient number, since it is larger than the sum of its proper divisors (1).

641317 is an equidigital number, since it uses as much as digits as its factorization.

641317 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 504, while the sum is 22.

The square root of 641317 is about 800.8227019759. The cubic root of 641317 is about 86.2364594020.

The spelling of 641317 in words is "six hundred forty-one thousand, three hundred seventeen".