66044978 has 8 divisors (see below), whose sum is σ = 99148080. Its totient is φ = 32995620.

The previous prime is 66044959. The next prime is 66044987. The reversal of 66044978 is 87944066.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10208 + ... + 15371.

It is an arithmetic number, because the mean of its divisors is an integer number (12393510).

Almost surely, 2^66044978 is an apocalyptic number.

66044978 is a deficient number, since it is larger than the sum of its proper divisors (33103102).

66044978 is a wasteful number, since it uses less digits than its factorization.

66044978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26872.

The product of its (nonzero) digits is 290304, while the sum is 44.

The square root of 66044978 is about 8126.8061377149. The cubic root of 66044978 is about 404.2157826778.

The spelling of 66044978 in words is "sixty-six million, forty-four thousand, nine hundred seventy-eight".