320660580361 has 9 divisors (see below), whose sum is σ = 352468476493. Its totient is φ = 291503955820.

The previous prime is 320660580319. The next prime is 320660580367. The reversal of 320660580361 is 163085066023.

The square root of 320660580361 is 566269.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 320660580361 - 2²⁷ = 320526362633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320660580367) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 6203220 + ... + 6254698.

Almost surely, 2^320660580361 is an apocalyptic number.

320660580361 is the 566269-th square number.

320660580361 is the 283135-th centered octagonal number.

It is an amenable number.

320660580361 is a deficient number, since it is larger than the sum of its proper divisors (31807896132).

320660580361 is an frugal number, since it uses more digits than its factorization.

320660580361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102980 (or 51490 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 40.

The spelling of 320660580361 in words is "three hundred twenty billion, six hundred sixty million, five hundred eighty thousand, three hundred sixty-one".