641323269 has 12 divisors (see below), whose sum is σ = 927108000. Its totient is φ = 427201704.

The previous prime is 641323223. The next prime is 641323273. The reversal of 641323269 is 962323146.

641323269 is a `hidden beast` number, since 6 + 413 + 232 + 6 + 9 = 666.

It is not a de Polignac number, because 641323269 - 2⁸ = 641323013 is a prime.

It is a super-2 number, since 2×641323269² = 822591070721692722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641323219) 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 11 ways as a sum of consecutive naturals, for example, 16969 + ... + 39630.

It is an arithmetic number, because the mean of its divisors is an integer number (77259000).

Almost surely, 2^641323269 is an apocalyptic number.

It is an amenable number.

641323269 is a deficient number, since it is larger than the sum of its proper divisors (285784731).

641323269 is a wasteful number, since it uses less digits than its factorization.

641323269 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57864 (or 57861 counting only the distinct ones).

The product of its digits is 46656, while the sum is 36.

The square root of 641323269 is about 25324.3611765430. The cubic root of 641323269 is about 862.3674039391.

The spelling of 641323269 in words is "six hundred forty-one million, three hundred twenty-three thousand, two hundred sixty-nine".