6624620 has 12 divisors (see below), whose sum is σ = 13911744. Its totient is φ = 2649840.

The previous prime is 6624619. The next prime is 6624641. The reversal of 6624620 is 264266.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 6624620.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 165596 + ... + 165635.

It is an arithmetic number, because the mean of its divisors is an integer number (1159312).

Almost surely, 2^6624620 is an apocalyptic number.

It is an amenable number.

6624620 is an abundant number, since it is smaller than the sum of its proper divisors (7287124).

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

6624620 is a wasteful number, since it uses less digits than its factorization.

6624620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331240 (or 331238 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 6624620 is about 2573.8337164627. The cubic root of 6624620 is about 187.8106967277.

Adding to 6624620 its reverse (264266), we get a palindrome (6888886).

It can be divided in two parts, 66246 and 20, that added together give a palindrome (66266).

The spelling of 6624620 in words is "six million, six hundred twenty-four thousand, six hundred twenty".