66301081 has 8 divisors (see below), whose sum is σ = 82661184. Its totient is φ = 51663120.

The previous prime is 66301069. The next prime is 66301087. The reversal of 66301081 is 18010366.

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 66301081 - 2⁷ = 66300953 is a prime.

It is a super-2 number, since 2×66301081² = 8791666683537122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66301087) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 430450 + ... + 430603.

It is an arithmetic number, because the mean of its divisors is an integer number (10332648).

Almost surely, 2^66301081 is an apocalyptic number.

It is an amenable number.

66301081 is a deficient number, since it is larger than the sum of its proper divisors (16360103).

66301081 is a wasteful number, since it uses less digits than its factorization.

66301081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 861071.

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

The square root of 66301081 is about 8142.5475743160. The cubic root of 66301081 is about 404.7375854320.

The spelling of 66301081 in words is "sixty-six million, three hundred one thousand, eighty-one".