66471005 has 8 divisors (see below), whose sum is σ = 79833600. Its totient is φ = 53131216.

The previous prime is 66471001. The next prime is 66471023. The reversal of 66471005 is 50017466.

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 66471005 - 2² = 66471001 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66471001) 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, 1556 + ... + 11634.

It is an arithmetic number, because the mean of its divisors is an integer number (9979200).

Almost surely, 2^66471005 is an apocalyptic number.

It is an amenable number.

66471005 is a deficient number, since it is larger than the sum of its proper divisors (13362595).

66471005 is a wasteful number, since it uses less digits than its factorization.

66471005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11403.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 66471005 is about 8152.9752238063. The cubic root of 66471005 is about 405.0830597312.

The spelling of 66471005 in words is "sixty-six million, four hundred seventy-one thousand, five".