66464585 has 8 divisors (see below), whose sum is σ = 87008256. Its totient is φ = 48337840.

The previous prime is 66464581. The next prime is 66464599. The reversal of 66464585 is 58546466.

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

It is not a de Polignac number, because 66464585 - 2² = 66464581 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66464581) 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, 604169 + ... + 604278.

It is an arithmetic number, because the mean of its divisors is an integer number (10876032).

Almost surely, 2^66464585 is an apocalyptic number.

It is an amenable number.

66464585 is a deficient number, since it is larger than the sum of its proper divisors (20543671).

66464585 is a wasteful number, since it uses less digits than its factorization.

66464585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1208463.

The product of its digits is 691200, while the sum is 44.

The square root of 66464585 is about 8152.5814929996. The cubic root of 66464585 is about 405.0700178695.

The spelling of 66464585 in words is "sixty-six million, four hundred sixty-four thousand, five hundred eighty-five".