66681124 has 24 divisors (see below), whose sum is σ = 121162496. Its totient is φ = 32076000.

The previous prime is 66681107. The next prime is 66681133. The reversal of 66681124 is 42118666.

It is a self number, because there is not a number n which added to its sum of digits gives 66681124.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20959 + ... + 23929.

Almost surely, 2^66681124 is an apocalyptic number.

It is an amenable number.

66681124 is a deficient number, since it is larger than the sum of its proper divisors (54481372).

66681124 is a wasteful number, since it uses less digits than its factorization.

66681124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3187 (or 3185 counting only the distinct ones).

The product of its digits is 13824, while the sum is 34.

The square root of 66681124 is about 8165.8510885271. The cubic root of 66681124 is about 405.5094417269.

The spelling of 66681124 in words is "sixty-six million, six hundred eighty-one thousand, one hundred twenty-four".