620220 has 24 divisors (see below), whose sum is σ = 1736784. Its totient is φ = 165376.

The previous prime is 620201. The next prime is 620227. The reversal of 620220 is 22026.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 620196 and 620205.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 620220.

It is not an unprimeable number, because it can be changed into a prime (620227) by changing a digit.

620220 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5109 + ... + 5228.

It is an arithmetic number, because the mean of its divisors is an integer number (72366).

2⁶²⁰²²⁰ is an apocalyptic number.

620220 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

620220 is an abundant number, since it is smaller than the sum of its proper divisors (1116564).

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

620220 is a wasteful number, since it uses less digits than its factorization.

620220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10349 (or 10347 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 620220 is about 787.5404751503. The cubic root of 620220 is about 85.2802743615.

Adding to 620220 its reverse (22026), we get a palindrome (642246).

The spelling of 620220 in words is "six hundred twenty thousand, two hundred twenty".