66454339 has 12 divisors (see below), whose sum is σ = 77715624. Its totient is φ = 56657664.

The previous prime is 66454327. The next prime is 66454369. The reversal of 66454339 is 93345466.

66454339 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 66454339 - 2²¹ = 64357187 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66454319) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 5944 + ... + 12970.

It is an arithmetic number, because the mean of its divisors is an integer number (6476302).

Almost surely, 2^66454339 is an apocalyptic number.

66454339 is a deficient number, since it is larger than the sum of its proper divisors (11261285).

66454339 is a wasteful number, since it uses less digits than its factorization.

66454339 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7234 (or 7227 counting only the distinct ones).

The product of its digits is 233280, while the sum is 40.

The square root of 66454339 is about 8151.9530788640. The cubic root of 66454339 is about 405.0492019683.

The spelling of 66454339 in words is "sixty-six million, four hundred fifty-four thousand, three hundred thirty-nine".