65531705 has 8 divisors (see below), whose sum is σ = 79121472. Its totient is φ = 52103088.

The previous prime is 65531693. The next prime is 65531707. The reversal of 65531705 is 50713556.

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 65531705 - 2¹⁰ = 65530681 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 (65531707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39389 + ... + 41018.

It is an arithmetic number, because the mean of its divisors is an integer number (9890184).

Almost surely, 2^65531705 is an apocalyptic number.

It is an amenable number.

65531705 is a deficient number, since it is larger than the sum of its proper divisors (13589767).

65531705 is a wasteful number, since it uses less digits than its factorization.

65531705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80575.

The product of its (nonzero) digits is 15750, while the sum is 32.

The square root of 65531705 is about 8095.1655325880. The cubic root of 65531705 is about 403.1659282204.

The spelling of 65531705 in words is "sixty-five million, five hundred thirty-one thousand, seven hundred five".