66484849 has 8 divisors (see below), whose sum is σ = 68985000. Its totient is φ = 63998592.

The previous prime is 66484829. The next prime is 66484861. The reversal of 66484849 is 94848466.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 31438449 + 35046400 = 5607^2 + 5920^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-66484849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66484829) 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 7 ways as a sum of consecutive naturals, for example, 6837 + ... + 13405.

It is an arithmetic number, because the mean of its divisors is an integer number (8623125).

Almost surely, 2^66484849 is an apocalyptic number.

It is an amenable number.

66484849 is a deficient number, since it is larger than the sum of its proper divisors (2500151).

66484849 is a wasteful number, since it uses less digits than its factorization.

66484849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6947.

The product of its digits is 1327104, while the sum is 49.

The square root of 66484849 is about 8153.8241948180. The cubic root of 66484849 is about 405.1111801656. Note that the first 4 decimals are identical.

The spelling of 66484849 in words is "sixty-six million, four hundred eighty-four thousand, eight hundred forty-nine".