620140 has 24 divisors (see below), whose sum is σ = 1319472. Its totient is φ = 244800.

The previous prime is 620117. The next prime is 620159. The reversal of 620140 is 41026.

It is a self number, because there is not a number n which added to its sum of digits gives 620140.

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 7 ways as a sum of consecutive naturals, for example, 1867 + ... + 2173.

It is an arithmetic number, because the mean of its divisors is an integer number (54978).

2⁶²⁰¹⁴⁰ is an apocalyptic number.

It is an amenable number.

620140 is an abundant number, since it is smaller than the sum of its proper divisors (699332).

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

620140 is a wasteful number, since it uses less digits than its factorization.

620140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 417 (or 415 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 620140 is about 787.4896824721. The cubic root of 620140 is about 85.2766075361.

Adding to 620140 its reverse (41026), we get a palindrome (661166).

It can be divided in two parts, 6201 and 40, that added together give a square (6241 = 79²).

The spelling of 620140 in words is "six hundred twenty thousand, one hundred forty".