6698664 has 48 divisors (see below), whose sum is σ = 20735520. Its totient is φ = 1913760.

The previous prime is 6698651. The next prime is 6698677. The reversal of 6698664 is 4668966.

It is an interprime number because it is at equal distance from previous prime (6698651) and next prime (6698677).

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

It is an unprimeable number.

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 in 11 ways as a sum of consecutive naturals, for example, 6142 + ... + 7149.

It is an arithmetic number, because the mean of its divisors is an integer number (431990).

Almost surely, 2^6698664 is an apocalyptic number.

It is an amenable number.

6698664 is an abundant number, since it is smaller than the sum of its proper divisors (14036856).

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

6698664 is a wasteful number, since it uses less digits than its factorization.

6698664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13310 (or 13303 counting only the distinct ones).

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

The square root of 6698664 is about 2588.1777373279. The cubic root of 6698664 is about 188.5078317614.

The spelling of 6698664 in words is "six million, six hundred ninety-eight thousand, six hundred sixty-four".