620604 has 18 divisors (see below), whose sum is σ = 1568840. Its totient is φ = 206856.

The previous prime is 620603. The next prime is 620623. The reversal of 620604 is 406026.

620604 is a `hidden beast` number, since 62 + 0 + 604 = 666.

620604 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 (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a plaindrome in 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 620604.

It is not an unprimeable number, because it can be changed into a prime (620603) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8584 + ... + 8655.

2⁶²⁰⁶⁰⁴ is an apocalyptic number.

It is an amenable number.

620604 is an abundant number, since it is smaller than the sum of its proper divisors (948236).

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

620604 is a wasteful number, since it uses less digits than its factorization.

620604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17249 (or 17244 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 620604 is about 787.7842344196. The cubic root of 620604 is about 85.2978707355.

The spelling of 620604 in words is "six hundred twenty thousand, six hundred four".