6695989 has 4 divisors (see below), whose sum is σ = 6713856. Its totient is φ = 6678124.

The previous prime is 6695987. The next prime is 6695993. The reversal of 6695989 is 9895966.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6695989 - 2¹ = 6695987 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6695981) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 8359 + ... + 9124.

It is an arithmetic number, because the mean of its divisors is an integer number (1678464).

Almost surely, 2^6695989 is an apocalyptic number.

It is an amenable number.

6695989 is a deficient number, since it is larger than the sum of its proper divisors (17867).

6695989 is a wasteful number, since it uses less digits than its factorization.

6695989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17866.

The product of its digits is 1049760, while the sum is 52.

The square root of 6695989 is about 2587.6609128709. The cubic root of 6695989 is about 188.4827359320.

The spelling of 6695989 in words is "six million, six hundred ninety-five thousand, nine hundred eighty-nine".