6730664 has 8 divisors (see below), whose sum is σ = 12620010. Its totient is φ = 3365328.

The previous prime is 6730663. The next prime is 6730667. The reversal of 6730664 is 4660376.

6730664 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 6041764 + 688900 = 2458^2 + 830^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 6730664.

It is not an unprimeable number, because it can be changed into a prime (6730663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 420659 + ... + 420674.

Almost surely, 2^6730664 is an apocalyptic number.

It is an amenable number.

6730664 is a deficient number, since it is larger than the sum of its proper divisors (5889346).

6730664 is a wasteful number, since it uses less digits than its factorization.

6730664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 841339 (or 841335 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 32.

The square root of 6730664 is about 2594.3523276533. The cubic root of 6730664 is about 188.8075268712.

The spelling of 6730664 in words is "six million, seven hundred thirty thousand, six hundred sixty-four".