320679705 has 8 divisors (see below), whose sum is σ = 513087552. Its totient is φ = 171029168.

The previous prime is 320679659. The next prime is 320679707. The reversal of 320679705 is 507976023.

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

It is a cyclic number.

It is not a de Polignac number, because 320679705 - 2¹¹ = 320677657 is a prime.

It is not an unprimeable number, because it can be changed into a prime (320679707) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10689309 + ... + 10689338.

It is an arithmetic number, because the mean of its divisors is an integer number (64135944).

Almost surely, 2^320679705 is an apocalyptic number.

It is an amenable number.

320679705 is a deficient number, since it is larger than the sum of its proper divisors (192407847).

320679705 is a wasteful number, since it uses less digits than its factorization.

320679705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21378655.

The product of its (nonzero) digits is 79380, while the sum is 39.

The square root of 320679705 is about 17907.5320745210. The cubic root of 320679705 is about 684.4743191901.

The spelling of 320679705 in words is "three hundred twenty million, six hundred seventy-nine thousand, seven hundred five".