320799506 has 4 divisors (see below), whose sum is σ = 481199262. Its totient is φ = 160399752.

The previous prime is 320799499. The next prime is 320799529. The reversal of 320799506 is 605997023.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 294431281 + 26368225 = 17159^2 + 5135^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80199875 + ... + 80199878.

Almost surely, 2^320799506 is an apocalyptic number.

320799506 is a deficient number, since it is larger than the sum of its proper divisors (160399756).

320799506 is a wasteful number, since it uses less digits than its factorization.

320799506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160399755.

The product of its (nonzero) digits is 102060, while the sum is 41.

The square root of 320799506 is about 17910.8767512928. The cubic root of 320799506 is about 684.5595449334.

The spelling of 320799506 in words is "three hundred twenty million, seven hundred ninety-nine thousand, five hundred six".