716505 has 16 divisors (see below), whose sum is σ = 1178304. Its totient is φ = 371520.

The previous prime is 716501. The next prime is 716531. The reversal of 716505 is 505617.

It is not a de Polignac number, because 716505 - 2² = 716501 is a prime.

It is a Curzon number.

716505 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (716501) 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 15 ways as a sum of consecutive naturals, for example, 91 + ... + 1200.

It is an arithmetic number, because the mean of its divisors is an integer number (73644).

2⁷¹⁶⁵⁰⁵ is an apocalyptic number.

It is an amenable number.

716505 is a deficient number, since it is larger than the sum of its proper divisors (461799).

716505 is a wasteful number, since it uses less digits than its factorization.

716505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1336.

The product of its (nonzero) digits is 1050, while the sum is 24.

The square root of 716505 is about 846.4661836128. The cubic root of 716505 is about 89.4828364037.

It can be divided in two parts, 716 and 505, that added together give a palindrome (1221).

The spelling of 716505 in words is "seven hundred sixteen thousand, five hundred five".