620430 has 16 divisors (see below), whose sum is σ = 1489104. Its totient is φ = 165440.

The previous prime is 620429. The next prime is 620437. The reversal of 620430 is 34026.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620437) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10311 + ... + 10370.

It is an arithmetic number, because the mean of its divisors is an integer number (93069).

2⁶²⁰⁴³⁰ is an apocalyptic number.

620430 is an abundant number, since it is smaller than the sum of its proper divisors (868674).

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

620430 is a wasteful number, since it uses less digits than its factorization.

620430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20691.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 620430 is about 787.6737903472. The cubic root of 620430 is about 85.2898982781.

Adding to 620430 its reverse (34026), we get a palindrome (654456).

The spelling of 620430 in words is "six hundred twenty thousand, four hundred thirty".