65216585 has 8 divisors (see below), whose sum is σ = 89439936. Its totient is φ = 44719920.

The previous prime is 65216581. The next prime is 65216587. The reversal of 65216585 is 58561256.

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

It is not a de Polignac number, because 65216585 - 2² = 65216581 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65216581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 931631 + ... + 931700.

It is an arithmetic number, because the mean of its divisors is an integer number (11179992).

Almost surely, 2^65216585 is an apocalyptic number.

It is an amenable number.

65216585 is a deficient number, since it is larger than the sum of its proper divisors (24223351).

65216585 is a wasteful number, since it uses less digits than its factorization.

65216585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1863343.

The product of its digits is 72000, while the sum is 38.

The square root of 65216585 is about 8075.6786092563. The cubic root of 65216585 is about 402.5186596804.

The spelling of 65216585 in words is "sixty-five million, two hundred sixteen thousand, five hundred eighty-five".