66081310 has 8 divisors (see below), whose sum is σ = 118946376. Its totient is φ = 26432520.

The previous prime is 66081287. The next prime is 66081377. The reversal of 66081310 is 1318066.

66081310 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a super-2 number, since 2×66081310² = 8733479062632200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3304056 + ... + 3304075.

It is an arithmetic number, because the mean of its divisors is an integer number (14868297).

Almost surely, 2^66081310 is an apocalyptic number.

66081310 is a deficient number, since it is larger than the sum of its proper divisors (52865066).

66081310 is a wasteful number, since it uses less digits than its factorization.

66081310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6608138.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 66081310 is about 8129.0411488687. The cubic root of 66081310 is about 404.2898901326.

Adding to 66081310 its reverse (1318066), we get a palindrome (67399376).

The spelling of 66081310 in words is "sixty-six million, eighty-one thousand, three hundred ten".