6606505 has 4 divisors (see below), whose sum is σ = 7927812. Its totient is φ = 5285200.

The previous prime is 6606493. The next prime is 6606521. The reversal of 6606505 is 5056066.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5056066 = 2 ⋅2528033.

It can be written as a sum of positive squares in 2 ways, for example, as 2650384 + 3956121 = 1628^2 + 1989^2 .

It is not a de Polignac number, because 6606505 - 2⁵ = 6606473 is a prime.

It is a Duffinian 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, 660646 + ... + 660655.

It is an arithmetic number, because the mean of its divisors is an integer number (1981953).

Almost surely, 2^6606505 is an apocalyptic number.

It is an amenable number.

6606505 is a deficient number, since it is larger than the sum of its proper divisors (1321307).

6606505 is a wasteful number, since it uses less digits than its factorization.

6606505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1321306.

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 6606505 is about 2570.3122378419. The cubic root of 6606505 is about 187.6393512224.

The spelling of 6606505 in words is "six million, six hundred six thousand, five hundred five".