620418 has 16 divisors (see below), whose sum is σ = 1264896. Its totient is φ = 202800.

The previous prime is 620413. The next prime is 620429. The reversal of 620418 is 814026.

620418 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 620394 and 620403.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 620418.

It is not an unprimeable number, because it can be changed into a prime (620413) by changing a digit.

620418 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 658 + ... + 1293.

It is an arithmetic number, because the mean of its divisors is an integer number (79056).

2⁶²⁰⁴¹⁸ is an apocalyptic number.

620418 is an abundant number, since it is smaller than the sum of its proper divisors (644478).

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

620418 is a wasteful number, since it uses less digits than its factorization.

620418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2009.

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 620418 is about 787.6661729438. Note that the first 3 decimals coincide. The cubic root of 620418 is about 85.2893483986.

The spelling of 620418 in words is "six hundred twenty thousand, four hundred eighteen".