620144 has 40 divisors (see below), whose sum is σ = 1413600. Its totient is φ = 263424.

The previous prime is 620117. The next prime is 620159. The reversal of 620144 is 441026.

620144 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 620144.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5432 + ... + 5544.

It is an arithmetic number, because the mean of its divisors is an integer number (35340).

2⁶²⁰¹⁴⁴ 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 620144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (706800).

620144 is an abundant number, since it is smaller than the sum of its proper divisors (793456).

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

620144 is a wasteful number, since it uses less digits than its factorization.

620144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142 (or 122 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 620144 is about 787.4922221838. The cubic root of 620144 is about 85.2767908849.

The spelling of 620144 in words is "six hundred twenty thousand, one hundred forty-four".