66873474 has 12 divisors (see below), whose sum is σ = 144892566. Its totient is φ = 22291152.

The previous prime is 66873451. The next prime is 66873481. The reversal of 66873474 is 47437866.

66873474 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 only one way, i.e., 66830625 + 42849 = 8175^2 + 207^2 .

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 5 ways as a sum of consecutive naturals, for example, 1857579 + ... + 1857614.

Almost surely, 2^66873474 is an apocalyptic number.

66873474 is an abundant number, since it is smaller than the sum of its proper divisors (78019092).

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

66873474 is a wasteful number, since it uses less digits than its factorization.

66873474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3715201 (or 3715198 counting only the distinct ones).

The product of its digits is 677376, while the sum is 45.

The square root of 66873474 is about 8177.6203140033. The cubic root of 66873474 is about 405.8989815568.

The spelling of 66873474 in words is "sixty-six million, eight hundred seventy-three thousand, four hundred seventy-four".