620920 has 48 divisors (see below), whose sum is σ = 1508760. Its totient is φ = 229824.

The previous prime is 620911. The next prime is 620929. The reversal of 620920 is 29026.

It is an interprime number because it is at equal distance from previous prime (620911) and next prime (620929).

It is a super-4 number, since 4×620920⁴ (a number of 24 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14419 + ... + 14461.

2⁶²⁰⁹²⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 620920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (754380).

620920 is an abundant number, since it is smaller than the sum of its proper divisors (887840).

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

620920 is a wasteful number, since it uses less digits than its factorization.

620920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92 (or 69 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 620920 is about 787.9847714265. The cubic root of 620920 is about 85.3123456415.

Adding to 620920 its reverse (29026), we get a palindrome (649946).

It can be divided in two parts, 620 and 920, that added together give a triangular number (1540 = T₅₅).

The spelling of 620920 in words is "six hundred twenty thousand, nine hundred twenty".