65481582 has 8 divisors (see below), whose sum is σ = 130963176. Its totient is φ = 21827192.

The previous prime is 65481571. The next prime is 65481589. The reversal of 65481582 is 28518456.

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

65481582 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 65481582.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65481589) by changing a digit.

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, 5456793 + ... + 5456804.

It is an arithmetic number, because the mean of its divisors is an integer number (16370397).

Almost surely, 2^65481582 is an apocalyptic number.

65481582 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65481582 is a wasteful number, since it uses less digits than its factorization.

65481582 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10913602.

The product of its digits is 76800, while the sum is 39.

The square root of 65481582 is about 8092.0690802785. The cubic root of 65481582 is about 403.0631126437.

The spelling of 65481582 in words is "sixty-five million, four hundred eighty-one thousand, five hundred eighty-two".