423816663 has 8 divisors (see below), whose sum is σ = 565826800. Its totient is φ = 282175488.

The previous prime is 423816661. The next prime is 423816671. The reversal of 423816663 is 366618324.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 423816663 - 2¹ = 423816661 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 (423816661) 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 7 ways as a sum of consecutive naturals, for example, 89548 + ... + 94161.

It is an arithmetic number, because the mean of its divisors is an integer number (70728350).

Almost surely, 2^423816663 is an apocalyptic number.

423816663 is a deficient number, since it is larger than the sum of its proper divisors (142010137).

423816663 is a wasteful number, since it uses less digits than its factorization.

423816663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184481.

The product of its digits is 124416, while the sum is 39.

The square root of 423816663 is about 20586.8079847265. The cubic root of 423816663 is about 751.1488543907.

The spelling of 423816663 in words is "four hundred twenty-three million, eight hundred sixteen thousand, six hundred sixty-three".