66666666674 has 12 divisors (see below), whose sum is σ = 102775752954. Its totient is φ = 32432431104.

The previous prime is 66666666667. The next prime is 66666666697. The reversal of 66666666674 is 47666666666.

66666666674 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 61185485449 + 5481181225 = 247357^2 + 74035^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 66666666674.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12171599 + ... + 12177074.

Almost surely, 2^66666666674 is an apocalyptic number.

66666666674 is a deficient number, since it is larger than the sum of its proper divisors (36109086280).

66666666674 is a wasteful number, since it uses less digits than its factorization.

66666666674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24348749 (or 24348712 counting only the distinct ones).

The product of its digits is 282175488, while the sum is 65.

The spelling of 66666666674 in words is "sixty-six billion, six hundred sixty-six million, six hundred sixty-six thousand, six hundred seventy-four".