620100 has 108 divisors (see below), whose sum is σ = 2132676. Its totient is φ = 149760.

The previous prime is 620099. The next prime is 620111. The reversal of 620100 is 1026.

It can be written as a sum of positive squares in 6 ways, for example, as 30276 + 589824 = 174^2 + 768^2 .

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a nialpdrome in base 16.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 11674 + ... + 11726.

It is an arithmetic number, because the mean of its divisors is an integer number (19747).

2⁶²⁰¹⁰⁰ is an apocalyptic number.

620100 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 620100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1066338).

620100 is an abundant number, since it is smaller than the sum of its proper divisors (1512576).

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

620100 is a wasteful number, since it uses less digits than its factorization.

620100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86 (or 76 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 620100 is about 787.4642849044. The cubic root of 620100 is about 85.2747740052.

Adding to 620100 its reverse (1026), we get a palindrome (621126).

The spelling of 620100 in words is "six hundred twenty thousand, one hundred".