6913664 has 16 divisors (see below), whose sum is σ = 13773570. Its totient is φ = 3456768.

The previous prime is 6913661. The next prime is 6913693. The reversal of 6913664 is 4663196.

It can be written as a sum of positive squares in only one way, i.e., 6760000 + 153664 = 2600^2 + 392^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is not an unprimeable number, because it can be changed into a prime (6913661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26879 + ... + 27134.

Almost surely, 2^6913664 is an apocalyptic number.

6913664 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

6913664 is a deficient number, since it is larger than the sum of its proper divisors (6859906).

6913664 is an equidigital number, since it uses as much as digits as its factorization.

6913664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54027 (or 54015 counting only the distinct ones).

The product of its digits is 23328, while the sum is 35.

The square root of 6913664 is about 2629.3847189029. The cubic root of 6913664 is about 190.5034110939.

The spelling of 6913664 in words is "six million, nine hundred thirteen thousand, six hundred sixty-four".