65316505 has 4 divisors (see below), whose sum is σ = 78379812. Its totient is φ = 52253200.

The previous prime is 65316487. The next prime is 65316529. The reversal of 65316505 is 50561356.

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

It can be written as a sum of positive squares in 2 ways, for example, as 47499664 + 17816841 = 6892^2 + 4221^2 .

It is a de Polignac number, because none of the positive numbers 2^k-65316505 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, 6531646 + ... + 6531655.

It is an arithmetic number, because the mean of its divisors is an integer number (19594953).

Almost surely, 2^65316505 is an apocalyptic number.

It is an amenable number.

65316505 is a deficient number, since it is larger than the sum of its proper divisors (13063307).

65316505 is a wasteful number, since it uses less digits than its factorization.

65316505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13063306.

The product of its (nonzero) digits is 13500, while the sum is 31.

The square root of 65316505 is about 8081.8627184579. The cubic root of 65316505 is about 402.7241244990.

The spelling of 65316505 in words is "sixty-five million, three hundred sixteen thousand, five hundred five".