65481085 has 4 divisors (see below), whose sum is σ = 78577308. Its totient is φ = 52384864.

The previous prime is 65481079. The next prime is 65481133. The reversal of 65481085 is 58018456.

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

It can be written as a sum of positive squares in 2 ways, for example, as 45077796 + 20403289 = 6714^2 + 4517^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65481085 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6548104 + ... + 6548113.

It is an arithmetic number, because the mean of its divisors is an integer number (19644327).

Almost surely, 2^65481085 is an apocalyptic number.

It is an amenable number.

65481085 is a deficient number, since it is larger than the sum of its proper divisors (13096223).

65481085 is a wasteful number, since it uses less digits than its factorization.

65481085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13096222.

The product of its (nonzero) digits is 38400, while the sum is 37.

The square root of 65481085 is about 8092.0383711399. The cubic root of 65481085 is about 403.0620929021.

The spelling of 65481085 in words is "sixty-five million, four hundred eighty-one thousand, eighty-five".