320605632 has 42 divisors (see below), whose sum is σ = 918959808. Its totient is φ = 106868352.

The previous prime is 320605589. The next prime is 320605633. The reversal of 320605632 is 236506023.

320605632 is a `hidden beast` number, since 3 + 20 + 6 + 0 + 5 + 632 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 320605596 and 320605605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320605633) 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 in 5 ways as a sum of consecutive naturals, for example, 277728 + ... + 278879.

Almost surely, 2^320605632 is an apocalyptic number.

320605632 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

320605632 is an abundant number, since it is smaller than the sum of its proper divisors (598354176).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

320605632 is a wasteful number, since it uses less digits than its factorization.

320605632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 556625 (or 556612 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 27.

The square root of 320605632 is about 17905.4637471360. The cubic root of 320605632 is about 684.4216134636.

The spelling of 320605632 in words is "three hundred twenty million, six hundred five thousand, six hundred thirty-two".