6989609 has 8 divisors (see below), whose sum is σ = 7888320. Its totient is φ = 6134800.

The previous prime is 6989599. The next prime is 6989617. The reversal of 6989609 is 9069896.

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 6989609 - 2¹² = 6985513 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (6989659) 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, 10637 + ... + 11274.

It is an arithmetic number, because the mean of its divisors is an integer number (986040).

Almost surely, 2^6989609 is an apocalyptic number.

It is an amenable number.

6989609 is a deficient number, since it is larger than the sum of its proper divisors (898711).

6989609 is a wasteful number, since it uses less digits than its factorization.

6989609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21951.

The product of its (nonzero) digits is 209952, while the sum is 47.

The square root of 6989609 is about 2643.7868673552. The cubic root of 6989609 is about 191.1984177463.

The spelling of 6989609 in words is "six million, nine hundred eighty-nine thousand, six hundred nine".