641767423 has 12 divisors (see below), whose sum is σ = 712699120. Its totient is φ = 577399680.

The previous prime is 641767421. The next prime is 641767429. The reversal of 641767423 is 324767146.

It is not a de Polignac number, because 641767423 - 2¹ = 641767421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641767421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15603 + ... + 39076.

Almost surely, 2^641767423 is an apocalyptic number.

641767423 is a deficient number, since it is larger than the sum of its proper divisors (70931697).

641767423 is a wasteful number, since it uses less digits than its factorization.

641767423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54798 (or 54787 counting only the distinct ones).

The product of its digits is 169344, while the sum is 40.

The square root of 641767423 is about 25333.1289618949. The cubic root of 641767423 is about 862.5664380104.

The spelling of 641767423 in words is "six hundred forty-one million, seven hundred sixty-seven thousand, four hundred twenty-three".