6389680 has 80 divisors (see below), whose sum is σ = 16632864. Its totient is φ = 2263040.

The previous prime is 6389629. The next prime is 6389683. The reversal of 6389680 is 869836.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6389683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46572 + ... + 46708.

Almost surely, 2^6389680 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 6389680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8316432).

6389680 is an abundant number, since it is smaller than the sum of its proper divisors (10243184).

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

6389680 is a wasteful number, since it uses less digits than its factorization.

6389680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214 (or 208 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 6389680 is about 2527.7816361387. The cubic root of 6389680 is about 185.5637054971.

The spelling of 6389680 in words is "six million, three hundred eighty-nine thousand, six hundred eighty".