66916682 has 16 divisors (see below), whose sum is σ = 114976320. Its totient is φ = 28613088.

The previous prime is 66916667. The next prime is 66916721. The reversal of 66916682 is 28661966.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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, 1169 + ... + 11627.

It is an arithmetic number, because the mean of its divisors is an integer number (7186020).

Almost surely, 2^66916682 is an apocalyptic number.

66916682 is a deficient number, since it is larger than the sum of its proper divisors (48059638).

66916682 is a wasteful number, since it uses less digits than its factorization.

66916682 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10925.

The product of its digits is 186624, while the sum is 44.

The square root of 66916682 is about 8180.2617317541. The cubic root of 66916682 is about 405.9863819678.

The spelling of 66916682 in words is "sixty-six million, nine hundred sixteen thousand, six hundred eighty-two".