320673579 has 8 divisors (see below), whose sum is σ = 441357312. Its totient is φ = 206886120.

The previous prime is 320673511. The next prime is 320673581. The reversal of 320673579 is 975376023.

It is a happy number.

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

It is not a de Polignac number, because 320673579 - 2¹² = 320669483 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 320673579.

It is not an unprimeable number, because it can be changed into a prime (320673589) 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, 1723959 + ... + 1724144.

It is an arithmetic number, because the mean of its divisors is an integer number (55169664).

Almost surely, 2^320673579 is an apocalyptic number.

320673579 is a deficient number, since it is larger than the sum of its proper divisors (120683733).

320673579 is a wasteful number, since it uses less digits than its factorization.

320673579 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3448137.

The product of its (nonzero) digits is 238140, while the sum is 42.

The square root of 320673579 is about 17907.3610283593. The cubic root of 320673579 is about 684.4699606185.

The spelling of 320673579 in words is "three hundred twenty million, six hundred seventy-three thousand, five hundred seventy-nine".