66841674 has 16 divisors (see below), whose sum is σ = 133868160. Its totient is φ = 22249760.

The previous prime is 66841613. The next prime is 66841681. The reversal of 66841674 is 47614866.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2754 + ... + 11885.

It is an arithmetic number, because the mean of its divisors is an integer number (8366760).

Almost surely, 2^66841674 is an apocalyptic number.

66841674 is an abundant number, since it is smaller than the sum of its proper divisors (67026486).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66841674 is a wasteful number, since it uses less digits than its factorization.

66841674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15405.

The product of its digits is 193536, while the sum is 42.

The square root of 66841674 is about 8175.6757518874. The cubic root of 66841674 is about 405.8346330025.

The spelling of 66841674 in words is "sixty-six million, eight hundred forty-one thousand, six hundred seventy-four".