320769346 has 4 divisors (see below), whose sum is σ = 481154022. Its totient is φ = 160384672.

The previous prime is 320769341. The next prime is 320769347. The reversal of 320769346 is 643967023.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 643967023 = 7 ⋅91995289.

It can be written as a sum of positive squares in only one way, i.e., 227859025 + 92910321 = 15095^2 + 9639^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 320769299 and 320769308.

It is not an unprimeable number, because it can be changed into a prime (320769341) 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 as a sum of consecutive naturals, namely, 80192335 + ... + 80192338.

Almost surely, 2^320769346 is an apocalyptic number.

320769346 is a deficient number, since it is larger than the sum of its proper divisors (160384676).

320769346 is a wasteful number, since it uses less digits than its factorization.

320769346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160384675.

The product of its (nonzero) digits is 163296, while the sum is 40.

The square root of 320769346 is about 17910.0347850025. The cubic root of 320769346 is about 684.5380912813.

The spelling of 320769346 in words is "three hundred twenty million, seven hundred sixty-nine thousand, three hundred forty-six".