320577 has 4 divisors (see below), whose sum is σ = 427440. Its totient is φ = 213716.

The previous prime is 320563. The next prime is 320591. The reversal of 320577 is 775023.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (320563) and next prime (320591).

It is a cyclic number.

It is not a de Polignac number, because 320577 - 2⁴ = 320561 is a prime.

It is a super-2 number, since 2×320577² = 205539225858, which contains 22 as substring.

It is a D-number.

320577 is a lucky number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 320577.

It is not an unprimeable number, because it can be changed into a prime (320377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53427 + ... + 53432.

It is an arithmetic number, because the mean of its divisors is an integer number (106860).

2³²⁰⁵⁷⁷ is an apocalyptic number.

It is an amenable number.

320577 is a deficient number, since it is larger than the sum of its proper divisors (106863).

320577 is a wasteful number, since it uses less digits than its factorization.

320577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106862.

The product of its (nonzero) digits is 1470, while the sum is 24.

The square root of 320577 is about 566.1951960234. The cubic root of 320577 is about 68.4401238543.

The spelling of 320577 in words is "three hundred twenty thousand, five hundred seventy-seven".