622620 has 48 divisors (see below), whose sum is σ = 1938720. Its totient is φ = 165888.

The previous prime is 622619. The next prime is 622621. The reversal of 622620 is 26226.

It is an interprime number because it is at equal distance from previous prime (622619) and next prime (622621).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 622593 and 622602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (622621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37 + ... + 1116.

It is an arithmetic number, because the mean of its divisors is an integer number (40390).

2⁶²²⁶²⁰ is an apocalyptic number.

622620 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 622620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (969360).

622620 is an abundant number, since it is smaller than the sum of its proper divisors (1316100).

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

622620 is a wasteful number, since it uses less digits than its factorization.

622620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1171 (or 1163 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 622620 is about 789.0627351485. The cubic root of 622620 is about 85.3901328120.

Adding to 622620 its reverse (26226), we get a palindrome (648846).

The spelling of 622620 in words is "six hundred twenty-two thousand, six hundred twenty".