66076978 has 8 divisors (see below), whose sum is σ = 108126000. Its totient is φ = 30034980.

The previous prime is 66076973. The next prime is 66076979. The reversal of 66076978 is 87967066.

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

It is a super-2 number, since 2×66076978² = 8732334043224968, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (66076973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1501728 + ... + 1501771.

It is an arithmetic number, because the mean of its divisors is an integer number (13515750).

Almost surely, 2^66076978 is an apocalyptic number.

66076978 is a deficient number, since it is larger than the sum of its proper divisors (42049022).

66076978 is a wasteful number, since it uses less digits than its factorization.

66076978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3003512.

The product of its (nonzero) digits is 762048, while the sum is 49.

The square root of 66076978 is about 8128.7746924121. The cubic root of 66076978 is about 404.2810554506.

The spelling of 66076978 in words is "sixty-six million, seventy-six thousand, nine hundred seventy-eight".