621852 has 48 divisors (see below), whose sum is σ = 1811712. Its totient is φ = 161280.

The previous prime is 621833. The next prime is 621869. The reversal of 621852 is 258126.

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 15 ways as a sum of consecutive naturals, for example, 588 + ... + 1260.

It is an arithmetic number, because the mean of its divisors is an integer number (37744).

2⁶²¹⁸⁵² 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 621852, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (905856).

621852 is an abundant number, since it is smaller than the sum of its proper divisors (1189860).

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

621852 is a wasteful number, since it uses less digits than its factorization.

621852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 698 (or 696 counting only the distinct ones).

The product of its digits is 960, while the sum is 24.

The square root of 621852 is about 788.5759316642. The cubic root of 621852 is about 85.3550088709.

Adding to 621852 its reverse (258126), we get a palindrome (879978).

The spelling of 621852 in words is "six hundred twenty-one thousand, eight hundred fifty-two".