6520716 has 48 divisors (see below), whose sum is σ = 17052000. Its totient is φ = 2154816.

The previous prime is 6520699. The next prime is 6520727. The reversal of 6520716 is 6170256.

6520716 is a `hidden beast` number, since 652 + 0 + 7 + 1 + 6 = 666.

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

It is a self number, because there is not a number n which added to its sum of digits gives 6520716.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18510 + ... + 18858.

It is an arithmetic number, because the mean of its divisors is an integer number (355250).

Almost surely, 2^6520716 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 6520716, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8526000).

6520716 is an abundant number, since it is smaller than the sum of its proper divisors (10531284).

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

6520716 is a wasteful number, since it uses less digits than its factorization.

6520716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 535 (or 527 counting only the distinct ones).

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

The square root of 6520716 is about 2553.5692667324. The cubic root of 6520716 is about 186.8236109224.

The spelling of 6520716 in words is "six million, five hundred twenty thousand, seven hundred sixteen".