6440912 has 20 divisors (see below), whose sum is σ = 12692640. Its totient is φ = 3165408.

The previous prime is 6440893. The next prime is 6440933. The reversal of 6440912 is 2190446.

It is a congruent number.

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, 2468 + ... + 4355.

It is an arithmetic number, because the mean of its divisors is an integer number (634632).

Almost surely, 2^6440912 is an apocalyptic number.

It is an amenable number.

6440912 is a deficient number, since it is larger than the sum of its proper divisors (6251728).

6440912 is a wasteful number, since it uses less digits than its factorization.

6440912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6890 (or 6884 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 6440912 is about 2537.8951909013. The cubic root of 6440912 is about 186.0583314177.

The spelling of 6440912 in words is "six million, four hundred forty thousand, nine hundred twelve".