646262423 has 4 divisors (see below), whose sum is σ = 654443040. Its totient is φ = 638081808.

The previous prime is 646262413. The next prime is 646262473. The reversal of 646262423 is 324262646.

646262423 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 646262423 - 2⁶ = 646262359 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 (646262413) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4090190 + ... + 4090347.

It is an arithmetic number, because the mean of its divisors is an integer number (163610760).

Almost surely, 2^646262423 is an apocalyptic number.

646262423 is a deficient number, since it is larger than the sum of its proper divisors (8180617).

646262423 is an equidigital number, since it uses as much as digits as its factorization.

646262423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8180616.

The product of its digits is 82944, while the sum is 35.

The square root of 646262423 is about 25421.6919775219. The cubic root of 646262423 is about 864.5755869551.

The spelling of 646262423 in words is "six hundred forty-six million, two hundred sixty-two thousand, four hundred twenty-three".