6989823 has 12 divisors (see below), whose sum is σ = 10235680. Its totient is φ = 4595616.

The previous prime is 6989821. The next prime is 6989833. The reversal of 6989823 is 3289896.

It is not a de Polignac number, because 6989823 - 2¹ = 6989821 is a prime.

It is a Duffinian number.

6989823 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6989821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4663 + ... + 5976.

Almost surely, 2^6989823 is an apocalyptic number.

6989823 is a deficient number, since it is larger than the sum of its proper divisors (3245857).

6989823 is a wasteful number, since it uses less digits than its factorization.

6989823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10718 (or 10715 counting only the distinct ones).

The product of its digits is 186624, while the sum is 45.

The square root of 6989823 is about 2643.8273392943. The cubic root of 6989823 is about 191.2003690259.

The spelling of 6989823 in words is "six million, nine hundred eighty-nine thousand, eight hundred twenty-three".