65135447 has 4 divisors (see below), whose sum is σ = 70145880. Its totient is φ = 60125016.

The previous prime is 65135437. The next prime is 65135453. The reversal of 65135447 is 74453156.

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

It is a cyclic number.

It is not a de Polignac number, because 65135447 - 2¹⁰ = 65134423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65135407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2505197 + ... + 2505222.

It is an arithmetic number, because the mean of its divisors is an integer number (17536470).

Almost surely, 2^65135447 is an apocalyptic number.

65135447 is a deficient number, since it is larger than the sum of its proper divisors (5010433).

65135447 is a wasteful number, since it uses less digits than its factorization.

65135447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5010432.

The product of its digits is 50400, while the sum is 35.

The square root of 65135447 is about 8070.6534431854. The cubic root of 65135447 is about 402.3516617067.

The spelling of 65135447 in words is "sixty-five million, one hundred thirty-five thousand, four hundred forty-seven".