6516986 has 16 divisors (see below), whose sum is σ = 11384064. Its totient is φ = 2739984.

The previous prime is 6516977. The next prime is 6516989. The reversal of 6516986 is 6896156.

It is a super-2 number, since 2×6516986² = 84942213048392, which contains 22 as substring.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (6516989) 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 7 ways as a sum of consecutive naturals, for example, 3650 + ... + 5133.

It is an arithmetic number, because the mean of its divisors is an integer number (711504).

Almost surely, 2^6516986 is an apocalyptic number.

6516986 is a deficient number, since it is larger than the sum of its proper divisors (4867078).

6516986 is a wasteful number, since it uses less digits than its factorization.

6516986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8845.

The product of its digits is 77760, while the sum is 41.

The square root of 6516986 is about 2552.8388119895. The cubic root of 6516986 is about 186.7879816560.

The spelling of 6516986 in words is "six million, five hundred sixteen thousand, nine hundred eighty-six".