6516616 has 8 divisors (see below), whose sum is σ = 12218670. Its totient is φ = 3258304.

The previous prime is 6516611. The next prime is 6516617. The reversal of 6516616 is 6166156.

It can be written as a sum of positive squares in only one way, i.e., 4639716 + 1876900 = 2154^2 + 1370^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (6516611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 407281 + ... + 407296.

Almost surely, 2^6516616 is an apocalyptic number.

It is an amenable number.

6516616 is a deficient number, since it is larger than the sum of its proper divisors (5702054).

6516616 is a wasteful number, since it uses less digits than its factorization.

6516616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 814583 (or 814579 counting only the distinct ones).

The product of its digits is 6480, while the sum is 31.

The square root of 6516616 is about 2552.7663426174. The cubic root of 6516616 is about 186.7844466445.

The spelling of 6516616 in words is "six million, five hundred sixteen thousand, six hundred sixteen".