8700505 has 24 divisors (see below), whose sum is σ = 11692296. Its totient is φ = 6209280.

The previous prime is 8700473. The next prime is 8700511. The reversal of 8700505 is 5050078.

It can be written as a sum of positive squares in 4 ways, for example, as 3415104 + 5285401 = 1848^2 + 2299^2 .

It is not a de Polignac number, because 8700505 - 2⁵ = 8700473 is a prime.

8700505 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 8700505.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 44067 + ... + 44263.

It is an arithmetic number, because the mean of its divisors is an integer number (487179).

Almost surely, 2^8700505 is an apocalyptic number.

It is an amenable number.

8700505 is a deficient number, since it is larger than the sum of its proper divisors (2991791).

8700505 is a wasteful number, since it uses less digits than its factorization.

8700505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297 (or 286 counting only the distinct ones).

The product of its (nonzero) digits is 1400, while the sum is 25.

The square root of 8700505 is about 2949.6618450256. The cubic root of 8700505 is about 205.6749910019.

The spelling of 8700505 in words is "eight million, seven hundred thousand, five hundred five".