6896664 has 80 divisors (see below), whose sum is σ = 20037600. Its totient is φ = 2213568.

The previous prime is 6896657. The next prime is 6896683. The reversal of 6896664 is 4666986.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 18609 + ... + 18975.

It is an arithmetic number, because the mean of its divisors is an integer number (250470).

Almost surely, 2^6896664 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6896664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10018800).

6896664 is an abundant number, since it is smaller than the sum of its proper divisors (13140936).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6896664 is a wasteful number, since it uses less digits than its factorization.

6896664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 414 (or 401 counting only the distinct ones).

The product of its digits is 373248, while the sum is 45.

The square root of 6896664 is about 2626.1500337947. The cubic root of 6896664 is about 190.3471400703.

The spelling of 6896664 in words is "six million, eight hundred ninety-six thousand, six hundred sixty-four".