621204 has 12 divisors (see below), whose sum is σ = 1449504. Its totient is φ = 207064.

The previous prime is 621143. The next prime is 621217. The reversal of 621204 is 402126.

621204 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a plaindrome in base 13 and base 14.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 621204.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25872 + ... + 25895.

It is an arithmetic number, because the mean of its divisors is an integer number (120792).

2⁶²¹²⁰⁴ is an apocalyptic number.

It is an amenable number.

621204 is an abundant number, since it is smaller than the sum of its proper divisors (828300).

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

621204 is a wasteful number, since it uses less digits than its factorization.

621204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51774 (or 51772 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 621204 is about 788.1649573535. The cubic root of 621204 is about 85.3253505445.

The spelling of 621204 in words is "six hundred twenty-one thousand, two hundred four".