6516655 has 4 divisors (see below), whose sum is σ = 7819992. Its totient is φ = 5213320.

The previous prime is 6516649. The next prime is 6516667. The reversal of 6516655 is 5566156.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 6516655 - 2³ = 6516647 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6516655.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 651661 + ... + 651670.

It is an arithmetic number, because the mean of its divisors is an integer number (1954998).

Almost surely, 2^6516655 is an apocalyptic number.

6516655 is a deficient number, since it is larger than the sum of its proper divisors (1303337).

6516655 is a wasteful number, since it uses less digits than its factorization.

6516655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1303336.

The product of its digits is 27000, while the sum is 34.

The square root of 6516655 is about 2552.7739813779. The cubic root of 6516655 is about 186.7848192601.

The spelling of 6516655 in words is "six million, five hundred sixteen thousand, six hundred fifty-five".