66678112 has 24 divisors (see below), whose sum is σ = 131454792. Its totient is φ = 33292800.

The previous prime is 66678109. The next prime is 66678113. The reversal of 66678112 is 21187666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66678113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42787 + ... + 44317.

It is an arithmetic number, because the mean of its divisors is an integer number (5477283).

Almost surely, 2^66678112 is an apocalyptic number.

It is an amenable number.

66678112 is a deficient number, since it is larger than the sum of its proper divisors (64776680).

66678112 is a wasteful number, since it uses less digits than its factorization.

66678112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2902 (or 2894 counting only the distinct ones).

The product of its digits is 24192, while the sum is 37.

The square root of 66678112 is about 8165.6666598631. Note that the first 4 decimals coincide. The cubic root of 66678112 is about 405.5033359869.

The spelling of 66678112 in words is "sixty-six million, six hundred seventy-eight thousand, one hundred twelve".