6620433 has 4 divisors (see below), whose sum is σ = 8827248. Its totient is φ = 4413620.

The previous prime is 6620423. The next prime is 6620441. The reversal of 6620433 is 3340266.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6620433 - 2⁵ = 6620401 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (6620423) 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, 1103403 + ... + 1103408.

It is an arithmetic number, because the mean of its divisors is an integer number (2206812).

Almost surely, 2^6620433 is an apocalyptic number.

It is an amenable number.

6620433 is a deficient number, since it is larger than the sum of its proper divisors (2206815).

6620433 is a wasteful number, since it uses less digits than its factorization.

6620433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2206814.

The product of its (nonzero) digits is 2592, while the sum is 24.

The square root of 6620433 is about 2573.0202097924. The cubic root of 6620433 is about 187.7711206657.

Adding to 6620433 its reverse (3340266), we get a palindrome (9960699).

The spelling of 6620433 in words is "six million, six hundred twenty thousand, four hundred thirty-three".