423644602 has 8 divisors (see below), whose sum is σ = 636935796. Its totient is φ = 211332672.

The previous prime is 423644597. The next prime is 423644621. The reversal of 423644602 is 206446324.

It can be written as a sum of positive squares in 2 ways, for example, as 308318481 + 115326121 = 17559^2 + 10739^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 243733 + ... + 245464.

Almost surely, 2^423644602 is an apocalyptic number.

423644602 is a deficient number, since it is larger than the sum of its proper divisors (213291194).

423644602 is a wasteful number, since it uses less digits than its factorization.

423644602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489632.

The product of its (nonzero) digits is 27648, while the sum is 31.

The square root of 423644602 is about 20582.6286465067. The cubic root of 423644602 is about 751.0471902134.

The spelling of 423644602 in words is "four hundred twenty-three million, six hundred forty-four thousand, six hundred two".