320607660 has 48 divisors (see below), whose sum is σ = 899329536. Its totient is φ = 85340352.

The previous prime is 320607647. The next prime is 320607719. The reversal of 320607660 is 66706023.

It is a Harshad number since it is a multiple of its sum of digits (30).

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 15 ways as a sum of consecutive naturals, for example, 30669 + ... + 39771.

It is an arithmetic number, because the mean of its divisors is an integer number (18736032).

Almost surely, 2^320607660 is an apocalyptic number.

320607660 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

320607660 is an abundant number, since it is smaller than the sum of its proper divisors (578721876).

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

320607660 is a wasteful number, since it uses less digits than its factorization.

320607660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9702 (or 9700 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 30.

The square root of 320607660 is about 17905.5203778053. The cubic root of 320607660 is about 684.4230565699.

The spelling of 320607660 in words is "three hundred twenty million, six hundred seven thousand, six hundred sixty".