65840533 has 8 divisors (see below), whose sum is σ = 73004256. Its totient is φ = 58873200.

The previous prime is 65840531. The next prime is 65840539. The reversal of 65840533 is 33504856.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 65840533 - 2¹ = 65840531 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 (65840531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48391 + ... + 49732.

It is an arithmetic number, because the mean of its divisors is an integer number (9125532).

Almost surely, 2^65840533 is an apocalyptic number.

It is an amenable number.

65840533 is a deficient number, since it is larger than the sum of its proper divisors (7163723).

65840533 is a wasteful number, since it uses less digits than its factorization.

65840533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98195.

The product of its (nonzero) digits is 43200, while the sum is 34.

The square root of 65840533 is about 8114.2179536909. The cubic root of 65840533 is about 403.7982625932.

The spelling of 65840533 in words is "sixty-five million, eight hundred forty thousand, five hundred thirty-three".