6400733 has 8 divisors (see below), whose sum is σ = 6560160. Its totient is φ = 6243120.

The previous prime is 6400717. The next prime is 6400753. The reversal of 6400733 is 3370046.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6400733 - 2⁴ = 6400717 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6400699 and 6400708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6400753) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8918 + ... + 9608.

It is an arithmetic number, because the mean of its divisors is an integer number (820020).

Almost surely, 2^6400733 is an apocalyptic number.

It is an amenable number.

6400733 is a deficient number, since it is larger than the sum of its proper divisors (159427).

6400733 is a wasteful number, since it uses less digits than its factorization.

6400733 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 907.

The product of its (nonzero) digits is 1512, while the sum is 23.

The square root of 6400733 is about 2529.9669958322. The cubic root of 6400733 is about 185.6706411669.

Adding to 6400733 its reverse (3370046), we get a palindrome (9770779).

The spelling of 6400733 in words is "six million, four hundred thousand, seven hundred thirty-three".