620560 has 20 divisors (see below), whose sum is σ = 1442988. Its totient is φ = 248192.

The previous prime is 620549. The next prime is 620561. The reversal of 620560 is 65026.

It can be written as a sum of positive squares in 2 ways, for example, as 374544 + 246016 = 612^2 + 496^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (620561) by changing a digit.

620560 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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, 3799 + ... + 3958.

2⁶²⁰⁵⁶⁰ is an apocalyptic number.

It is an amenable number.

620560 is an abundant number, since it is smaller than the sum of its proper divisors (822428).

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

620560 is a wasteful number, since it uses less digits than its factorization.

620560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7770 (or 7764 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 620560 is about 787.7563074962. The cubic root of 620560 is about 85.2958548526.

Adding to 620560 its reverse (65026), we get a palindrome (685586).

The spelling of 620560 in words is "six hundred twenty thousand, five hundred sixty".