6440033 has 4 divisors (see below), whose sum is σ = 6647808. Its totient is φ = 6232260.

The previous prime is 6440029. The next prime is 6440039. The reversal of 6440033 is 3300446.

It is a happy number.

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 6440033 - 2² = 6440029 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6439987 and 6440014.

It is not an unprimeable number, because it can be changed into a prime (6440039) 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, 103841 + ... + 103902.

It is an arithmetic number, because the mean of its divisors is an integer number (1661952).

Almost surely, 2^6440033 is an apocalyptic number.

It is an amenable number.

6440033 is a deficient number, since it is larger than the sum of its proper divisors (207775).

6440033 is a wasteful number, since it uses less digits than its factorization.

6440033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207774.

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 6440033 is about 2537.7220099924. The cubic root of 6440033 is about 186.0498671550.

Adding to 6440033 its reverse (3300446), we get a palindrome (9740479).

The spelling of 6440033 in words is "six million, four hundred forty thousand, thirty-three".