620530 has 8 divisors (see below), whose sum is σ = 1116972. Its totient is φ = 248208.

The previous prime is 620519. The next prime is 620531. The reversal of 620530 is 35026.

It can be written as a sum of positive squares in 2 ways, for example, as 606841 + 13689 = 779^2 + 117^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (620531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31017 + ... + 31036.

2⁶²⁰⁵³⁰ is an apocalyptic number.

620530 is a deficient number, since it is larger than the sum of its proper divisors (496442).

620530 is a wasteful number, since it uses less digits than its factorization.

620530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62060.

The product of its (nonzero) digits is 180, while the sum is 16.

The square root of 620530 is about 787.7372658444. The cubic root of 620530 is about 85.2944803323.

Adding to 620530 its reverse (35026), we get a palindrome (655556).

The spelling of 620530 in words is "six hundred twenty thousand, five hundred thirty".