6698667 has 4 divisors (see below), whose sum is σ = 8931560. Its totient is φ = 4465776.

The previous prime is 6698651. The next prime is 6698677. The reversal of 6698667 is 7668966.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 6698667 - 2⁴ = 6698651 is a prime.

It is a D-number.

It is a Duffinian number.

6698667 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (6698677) 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 in 3 ways as a sum of consecutive naturals, for example, 1116442 + ... + 1116447.

It is an arithmetic number, because the mean of its divisors is an integer number (2232890).

Almost surely, 2^6698667 is an apocalyptic number.

6698667 is a deficient number, since it is larger than the sum of its proper divisors (2232893).

6698667 is a wasteful number, since it uses less digits than its factorization.

6698667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2232892.

The product of its digits is 653184, while the sum is 48.

The square root of 6698667 is about 2588.1783168862. The cubic root of 6698667 is about 188.5078599025.

Subtracting 6698667 from its reverse (7668966), we obtain a cube (970299 = 99³).

The spelling of 6698667 in words is "six million, six hundred ninety-eight thousand, six hundred sixty-seven".