6689748 has 96 divisors (see below), whose sum is σ = 18471040. Its totient is φ = 1866240.

The previous prime is 6689741. The next prime is 6689773. The reversal of 6689748 is 8479866.

It is a junction number, because it is equal to n+sod(n) for n = 6689697 and 6689706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6689741) 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 31 ways as a sum of consecutive naturals, for example, 109638 + ... + 109698.

Almost surely, 2^6689748 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6689748, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9235520).

6689748 is an abundant number, since it is smaller than the sum of its proper divisors (11781292).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6689748 is a wasteful number, since it uses less digits than its factorization.

6689748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137 (or 135 counting only the distinct ones).

The product of its digits is 580608, while the sum is 48.

The square root of 6689748 is about 2586.4547164024. The cubic root of 6689748 is about 188.4241592523.

The spelling of 6689748 in words is "six million, six hundred eighty-nine thousand, seven hundred forty-eight".