620488 has 24 divisors (see below), whose sum is σ = 1280790. Its totient is φ = 281600.

The previous prime is 620467. The next prime is 620491. The reversal of 620488 is 884026.

It can be written as a sum of positive squares in only one way, i.e., 407044 + 213444 = 638^2 + 462^2 .

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 648 + ... + 1288.

2⁶²⁰⁴⁸⁸ 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 620488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (640395).

620488 is an abundant number, since it is smaller than the sum of its proper divisors (660302).

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

620488 is a wasteful number, since it uses less digits than its factorization.

620488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 669 (or 654 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 28.

The square root of 620488 is about 787.7106067586. The cubic root of 620488 is about 85.2925559295.

The spelling of 620488 in words is "six hundred twenty thousand, four hundred eighty-eight".