6708664 has 8 divisors (see below), whose sum is σ = 12578760. Its totient is φ = 3354328.

The previous prime is 6708661. The next prime is 6708673. The reversal of 6708664 is 4668076.

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

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6708661) 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 as a sum of consecutive naturals, namely, 419284 + ... + 419299.

It is an arithmetic number, because the mean of its divisors is an integer number (1572345).

Almost surely, 2^6708664 is an apocalyptic number.

It is an amenable number.

6708664 is a deficient number, since it is larger than the sum of its proper divisors (5870096).

6708664 is a wasteful number, since it uses less digits than its factorization.

6708664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 838589 (or 838585 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 6708664 is about 2590.1088780204. The cubic root of 6708664 is about 188.6015888179.

The spelling of 6708664 in words is "six million, seven hundred eight thousand, six hundred sixty-four".