320776964 has 12 divisors (see below), whose sum is σ = 579468288. Its totient is φ = 155214600.

The previous prime is 320776931. The next prime is 320776969. The reversal of 320776964 is 469677023.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (320776969) by changing a digit.

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, 1293332 + ... + 1293579.

It is an arithmetic number, because the mean of its divisors is an integer number (48289024).

Almost surely, 2^320776964 is an apocalyptic number.

It is an amenable number.

320776964 is a deficient number, since it is larger than the sum of its proper divisors (258691324).

320776964 is a wasteful number, since it uses less digits than its factorization.

320776964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2586946 (or 2586944 counting only the distinct ones).

The product of its (nonzero) digits is 381024, while the sum is 44.

The square root of 320776964 is about 17910.2474578103. The cubic root of 320776964 is about 684.5435103049.

The spelling of 320776964 in words is "three hundred twenty million, seven hundred seventy-six thousand, nine hundred sixty-four".