423665056 has 12 divisors (see below), whose sum is σ = 834090642. Its totient is φ = 211832512.

The previous prime is 423665051. The next prime is 423665087. The reversal of 423665056 is 650566324.

It can be written as a sum of positive squares in only one way, i.e., 219632400 + 204032656 = 14820^2 + 14284^2 .

It is not an unprimeable number, because it can be changed into a prime (423665051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6619735 + ... + 6619798.

Almost surely, 2^423665056 is an apocalyptic number.

It is an amenable number.

423665056 is a deficient number, since it is larger than the sum of its proper divisors (410425586).

423665056 is a wasteful number, since it uses less digits than its factorization.

423665056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13239543 (or 13239535 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 37.

The square root of 423665056 is about 20583.1255158200. The cubic root of 423665056 is about 751.0592771309.

The spelling of 423665056 in words is "four hundred twenty-three million, six hundred sixty-five thousand, fifty-six".