6440752 has 20 divisors (see below), whose sum is σ = 12621960. Its totient is φ = 3183488.

The previous prime is 6440747. The next prime is 6440771. The reversal of 6440752 is 2570446.

It is a self number, because there is not a number n which added to its sum of digits gives 6440752.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 838 + ... + 3685.

It is an arithmetic number, because the mean of its divisors is an integer number (631098).

Almost surely, 2^6440752 is an apocalyptic number.

It is an amenable number.

6440752 is a deficient number, since it is larger than the sum of its proper divisors (6181208).

6440752 is a wasteful number, since it uses less digits than its factorization.

6440752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4620 (or 4614 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 6440752 is about 2537.8636685212. The cubic root of 6440752 is about 186.0567907673.

The spelling of 6440752 in words is "six million, four hundred forty thousand, seven hundred fifty-two".