6662689 has 8 divisors (see below), whose sum is σ = 7289568. Its totient is φ = 6039360.

The previous prime is 6662671. The next prime is 6662707. The reversal of 6662689 is 9862666.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (6662671) and next prime (6662707).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6662689 - 2⁷ = 6662561 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6662989) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4489 + ... + 5785.

It is an arithmetic number, because the mean of its divisors is an integer number (911196).

Almost surely, 2^6662689 is an apocalyptic number.

It is an amenable number.

6662689 is a deficient number, since it is larger than the sum of its proper divisors (626879).

6662689 is a wasteful number, since it uses less digits than its factorization.

6662689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1775.

The product of its digits is 186624, while the sum is 43.

The square root of 6662689 is about 2581.2185107038. The cubic root of 6662689 is about 188.1697670528.

The spelling of 6662689 in words is "six million, six hundred sixty-two thousand, six hundred eighty-nine".