320678871 has 8 divisors (see below), whose sum is σ = 452723184. Its totient is φ = 201210240.

The previous prime is 320678867. The next prime is 320678879. The reversal of 320678871 is 178876023.

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

It is not a de Polignac number, because 320678871 - 2² = 320678867 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320678879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3143860 + ... + 3143961.

It is an arithmetic number, because the mean of its divisors is an integer number (56590398).

Almost surely, 2^320678871 is an apocalyptic number.

320678871 is a deficient number, since it is larger than the sum of its proper divisors (132044313).

320678871 is a wasteful number, since it uses less digits than its factorization.

320678871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6287841.

The product of its (nonzero) digits is 112896, while the sum is 42.

The square root of 320678871 is about 17907.5087882151. The cubic root of 320678871 is about 684.4737258129.

The spelling of 320678871 in words is "three hundred twenty million, six hundred seventy-eight thousand, eight hundred seventy-one".