641332273 has 2 divisors, whose sum is σ = 641332274. Its totient is φ = 641332272.

The previous prime is 641332261. The next prime is 641332337. The reversal of 641332273 is 372233146.

641332273 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 543262864 + 98069409 = 23308^2 + 9903^2 .

It is a cyclic number.

It is not a de Polignac number, because 641332273 - 2²⁹ = 104461361 is a prime.

It is a super-2 number, since 2×641332273² = 822614168782693058, which contains 22 as substring.

It is equal to p_33366253 and since 641332273 and 33366253 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (641332073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 320666136 + 320666137.

It is an arithmetic number, because the mean of its divisors is an integer number (320666137).

Almost surely, 2^641332273 is an apocalyptic number.

It is an amenable number.

641332273 is a deficient number, since it is larger than the sum of its proper divisors (1).

641332273 is an equidigital number, since it uses as much as digits as its factorization.

641332273 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18144, while the sum is 31.

The square root of 641332273 is about 25324.5389494064. The cubic root of 641332273 is about 862.3714397195.

The spelling of 641332273 in words is "six hundred forty-one million, three hundred thirty-two thousand, two hundred seventy-three".