6650720 has 48 divisors (see below), whose sum is σ = 15866928. Its totient is φ = 2634240.

The previous prime is 6650717. The next prime is 6650729. The reversal of 6650720 is 270566.

It is a self number, because there is not a number n which added to its sum of digits gives 6650720.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6650729) 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, 31415 + ... + 31625.

It is an arithmetic number, because the mean of its divisors is an integer number (330561).

Almost surely, 2^6650720 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 6650720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7933464).

6650720 is an abundant number, since it is smaller than the sum of its proper divisors (9216208).

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

6650720 is a wasteful number, since it uses less digits than its factorization.

6650720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423 (or 415 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 6650720 is about 2578.8989898792. The cubic root of 6650720 is about 188.0570220873.

The spelling of 6650720 in words is "six million, six hundred fifty thousand, seven hundred twenty".