65648133 has 6 divisors (see below), whose sum is σ = 94825094. Its totient is φ = 43765416.

The previous prime is 65648129. The next prime is 65648147. The reversal of 65648133 is 33184656.

65648133 is a `hidden beast` number, since 6 + 5 + 648 + 1 + 3 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 60186564 + 5461569 = 7758^2 + 2337^2 .

It is not a de Polignac number, because 65648133 - 2² = 65648129 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 (65648113) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3647110 + ... + 3647127.

Almost surely, 2^65648133 is an apocalyptic number.

It is an amenable number.

65648133 is a deficient number, since it is larger than the sum of its proper divisors (29176961).

65648133 is a wasteful number, since it uses less digits than its factorization.

65648133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7294243 (or 7294240 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 65648133 is about 8102.3535469640. The cubic root of 65648133 is about 403.4045507889.

The spelling of 65648133 in words is "sixty-five million, six hundred forty-eight thousand, one hundred thirty-three".