620320 has 24 divisors (see below), whose sum is σ = 1465884. Its totient is φ = 248064.

The previous prime is 620317. The next prime is 620329. The reversal of 620320 is 23026.

620320 = T₁₀₆ + T₁₀₇ + ... + T₁₆₉.

It can be written as a sum of positive squares in 2 ways, for example, as 595984 + 24336 = 772^2 + 156^2 .

It is a nialpdrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 620320.

It is not an unprimeable number, because it can be changed into a prime (620329) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1779 + ... + 2098.

2⁶²⁰³²⁰ is an apocalyptic number.

It is an amenable number.

620320 is an abundant number, since it is smaller than the sum of its proper divisors (845564).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

620320 is a wasteful number, since it uses less digits than its factorization.

620320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3892 (or 3884 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 620320 is about 787.6039613918. The cubic root of 620320 is about 85.2848574498.

Adding to 620320 its reverse (23026), we get a palindrome (643346).

The spelling of 620320 in words is "six hundred twenty thousand, three hundred twenty".