6624001 has 4 divisors (see below), whose sum is σ = 6785604. Its totient is φ = 6462400.

The previous prime is 6623963. The next prime is 6624017. The reversal of 6624001 is 1004266.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1004266 = 2 ⋅502133.

It can be written as a sum of positive squares in 2 ways, for example, as 1893376 + 4730625 = 1376^2 + 2175^2 .

It is a cyclic number.

It is not a de Polignac number, because 6624001 - 2⁷ = 6623873 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6624001.

It is not an unprimeable number, because it can be changed into a prime (6624031) 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, 80740 + ... + 80821.

It is an arithmetic number, because the mean of its divisors is an integer number (1696401).

Almost surely, 2^6624001 is an apocalyptic number.

It is an amenable number.

6624001 is a deficient number, since it is larger than the sum of its proper divisors (161603).

6624001 is a wasteful number, since it uses less digits than its factorization.

6624001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161602.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 6624001 is about 2573.7134650151. The cubic root of 6624001 is about 187.8048469108.

Adding to 6624001 its reverse (1004266), we get a palindrome (7628267).

The spelling of 6624001 in words is "six million, six hundred twenty-four thousand, one".