6625424 has 40 divisors (see below), whose sum is σ = 14108472. Its totient is φ = 2995200.

The previous prime is 6625417. The next prime is 6625447. The reversal of 6625424 is 4245266.

It can be written as a sum of positive squares in 4 ways, for example, as 1517824 + 5107600 = 1232^2 + 2260^2 .

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10724 + ... + 11324.

Almost surely, 2^6625424 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6625424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7054236).

6625424 is an abundant number, since it is smaller than the sum of its proper divisors (7483048).

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

6625424 is a wasteful number, since it uses less digits than its factorization.

6625424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 675 (or 669 counting only the distinct ones).

The product of its digits is 11520, while the sum is 29.

The square root of 6625424 is about 2573.9898989701. The cubic root of 6625424 is about 187.8182943304.

The spelling of 6625424 in words is "six million, six hundred twenty-five thousand, four hundred twenty-four".