620624 has 20 divisors (see below), whose sum is σ = 1220160. Its totient is φ = 305760.

The previous prime is 620623. The next prime is 620639. The reversal of 620624 is 426026.

It is a junction number, because it is equal to n+sod(n) for n = 620596 and 620605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620623) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1019 + ... + 1509.

It is an arithmetic number, because the mean of its divisors is an integer number (61008).

2⁶²⁰⁶²⁴ is an apocalyptic number.

It is an amenable number.

620624 is a deficient number, since it is larger than the sum of its proper divisors (599536).

620624 is a wasteful number, since it uses less digits than its factorization.

620624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 578 (or 572 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 620624 is about 787.7969281484. The cubic root of 620624 is about 85.2987870144.

The spelling of 620624 in words is "six hundred twenty thousand, six hundred twenty-four".