423812663 has 2 divisors, whose sum is σ = 423812664. Its totient is φ = 423812662.

The previous prime is 423812659. The next prime is 423812693. The reversal of 423812663 is 366218324.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 423812663 - 2² = 423812659 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (423812603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211906331 + 211906332.

It is an arithmetic number, because the mean of its divisors is an integer number (211906332).

Almost surely, 2^423812663 is an apocalyptic number.

423812663 is a deficient number, since it is larger than the sum of its proper divisors (1).

423812663 is an equidigital number, since it uses as much as digits as its factorization.

423812663 is an evil number, because the sum of its binary digits is even.

The product of its digits is 41472, while the sum is 35.

The square root of 423812663 is about 20586.7108349051. The cubic root of 423812663 is about 751.1464912581.

The spelling of 423812663 in words is "four hundred twenty-three million, eight hundred twelve thousand, six hundred sixty-three".