6634789 has 8 divisors (see below), whose sum is σ = 7634048. Its totient is φ = 5648400.

The previous prime is 6634783. The next prime is 6634799. The reversal of 6634789 is 9874366.

It is a happy number.

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 6634789 - 2¹³ = 6626597 is a prime.

It is a super-3 number, since 3×6634789³ (a number of 21 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6634783) 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, 2082 + ... + 4195.

It is an arithmetic number, because the mean of its divisors is an integer number (954256).

Almost surely, 2^6634789 is an apocalyptic number.

It is an amenable number.

6634789 is a deficient number, since it is larger than the sum of its proper divisors (999259).

6634789 is a wasteful number, since it uses less digits than its factorization.

6634789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6435.

The product of its digits is 217728, while the sum is 43.

The square root of 6634789 is about 2575.8084167888. The cubic root of 6634789 is about 187.9067460398.

The spelling of 6634789 in words is "six million, six hundred thirty-four thousand, seven hundred eighty-nine".