66734343674 has 8 divisors (see below), whose sum is σ = 101742524148. Its totient is φ = 32820168960.

The previous prime is 66734343673. The next prime is 66734343721. The reversal of 66734343674 is 47634343766.

It can be written as a sum of positive squares in 2 ways, for example, as 57353065225 + 9381278449 = 239485^2 + 96857^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (66734343673) 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, 273501287 + ... + 273501530.

Almost surely, 2^66734343674 is an apocalyptic number.

66734343674 is a deficient number, since it is larger than the sum of its proper divisors (35008180474).

66734343674 is a wasteful number, since it uses less digits than its factorization.

66734343674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 547002880.

The product of its digits is 18289152, while the sum is 53.

The spelling of 66734343674 in words is "sixty-six billion, seven hundred thirty-four million, three hundred forty-three thousand, six hundred seventy-four".