6620424 has 32 divisors (see below), whose sum is σ = 16638720. Its totient is φ = 2195136.

The previous prime is 6620423. The next prime is 6620441. The reversal of 6620424 is 4240266.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 6620394 and 6620403.

It is not an unprimeable number, because it can be changed into a prime (6620423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4734 + ... + 5970.

It is an arithmetic number, because the mean of its divisors is an integer number (519960).

Almost surely, 2^6620424 is an apocalyptic number.

It is an amenable number.

6620424 is an abundant number, since it is smaller than the sum of its proper divisors (10018296).

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

6620424 is a wasteful number, since it uses less digits than its factorization.

6620424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1469 (or 1465 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 6620424 is about 2573.0184608743. The cubic root of 6620424 is about 187.7710355786.

The spelling of 6620424 in words is "six million, six hundred twenty thousand, four hundred twenty-four".