620559 has 18 divisors (see below), whose sum is σ = 950976. Its totient is φ = 389880.

The previous prime is 620549. The next prime is 620561. The reversal of 620559 is 955026.

620559 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 620559 - 2⁸ = 620303 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620519) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 3154 + ... + 3344.

It is an arithmetic number, because the mean of its divisors is an integer number (52832).

2⁶²⁰⁵⁵⁹ is an apocalyptic number.

620559 is a deficient number, since it is larger than the sum of its proper divisors (330417).

620559 is a wasteful number, since it uses less digits than its factorization.

620559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235 (or 213 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

The square root of 620559 is about 787.7556727819. The cubic root of 620559 is about 85.2958090360.

The spelling of 620559 in words is "six hundred twenty thousand, five hundred fifty-nine".