6516720 has 160 divisors (see below), whose sum is σ = 25712640. Its totient is φ = 1486080.

The previous prime is 6516703. The next prime is 6516739. The reversal of 6516720 is 276156.

6516720 is a `hidden beast` number, since 651 + 6 + 7 + 2 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a zygodrome in base 12.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14905 + ... + 15335.

It is an arithmetic number, because the mean of its divisors is an integer number (160704).

Almost surely, 2^6516720 is an apocalyptic number.

6516720 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6516720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12856320).

6516720 is an abundant number, since it is smaller than the sum of its proper divisors (19195920).

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

6516720 is a wasteful number, since it uses less digits than its factorization.

6516720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 460 (or 448 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 6516720 is about 2552.7867125947. The cubic root of 6516720 is about 186.7854402829.

The spelling of 6516720 in words is "six million, five hundred sixteen thousand, seven hundred twenty".