66718996 has 12 divisors (see below), whose sum is σ = 116815552. Its totient is φ = 33343128.

The previous prime is 66718987. The next prime is 66719017. The reversal of 66718996 is 69981766.

66718996 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13111 + ... + 17473.

Almost surely, 2^66718996 is an apocalyptic number.

It is an amenable number.

66718996 is a deficient number, since it is larger than the sum of its proper divisors (50096556).

66718996 is a wasteful number, since it uses less digits than its factorization.

66718996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8190 (or 8188 counting only the distinct ones).

The product of its digits is 979776, while the sum is 52.

The square root of 66718996 is about 8168.1696848192. The cubic root of 66718996 is about 405.5861978168.

The spelling of 66718996 in words is "sixty-six million, seven hundred eighteen thousand, nine hundred ninety-six".