408620 has 12 divisors (see below), whose sum is σ = 858144. Its totient is φ = 163440.

The previous prime is 408607. The next prime is 408623. The reversal of 408620 is 26804.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 20431 = 408620 / (4 + 0 + 8 + 6 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 408592 and 408601.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 408620.

It is not an unprimeable number, because it can be changed into a prime (408623) 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, 10196 + ... + 10235.

It is an arithmetic number, because the mean of its divisors is an integer number (71512).

2⁴⁰⁸⁶²⁰ is an apocalyptic number.

It is an amenable number.

408620 is an abundant number, since it is smaller than the sum of its proper divisors (449524).

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

408620 is a wasteful number, since it uses less digits than its factorization.

408620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20440 (or 20438 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 408620 is about 639.2339164969. The cubic root of 408620 is about 74.2061454310.

The spelling of 408620 in words is "four hundred eight thousand, six hundred twenty".