65047505 has 4 divisors (see below), whose sum is σ = 78057012. Its totient is φ = 52038000.

The previous prime is 65047501. The next prime is 65047537. The reversal of 65047505 is 50574056.

It is a happy number.

65047505 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 29953729 + 35093776 = 5473^2 + 5924^2 .

It is not a de Polignac number, because 65047505 - 2² = 65047501 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (65047501) 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 3 ways as a sum of consecutive naturals, for example, 6504746 + ... + 6504755.

It is an arithmetic number, because the mean of its divisors is an integer number (19514253).

Almost surely, 2^65047505 is an apocalyptic number.

It is an amenable number.

65047505 is a deficient number, since it is larger than the sum of its proper divisors (13009507).

65047505 is a wasteful number, since it uses less digits than its factorization.

65047505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13009506.

The product of its (nonzero) digits is 21000, while the sum is 32.

The square root of 65047505 is about 8065.2033452356. The cubic root of 65047505 is about 402.1705030714.

The spelling of 65047505 in words is "sixty-five million, forty-seven thousand, five hundred five".