66439084 has 12 divisors (see below), whose sum is σ = 116348400. Its totient is φ = 33196688.

The previous prime is 66439073. The next prime is 66439091. The reversal of 66439084 is 48093466.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1977 + ... + 11695.

It is an arithmetic number, because the mean of its divisors is an integer number (9695700).

Almost surely, 2^66439084 is an apocalyptic number.

It is an amenable number.

66439084 is a deficient number, since it is larger than the sum of its proper divisors (49909316).

66439084 is a wasteful number, since it uses less digits than its factorization.

66439084 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11432 (or 11430 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 40.

The square root of 66439084 is about 8151.0173598147. The cubic root of 66439084 is about 405.0182057558.

The spelling of 66439084 in words is "sixty-six million, four hundred thirty-nine thousand, eighty-four".