66473474 has 4 divisors (see below), whose sum is σ = 99710214. Its totient is φ = 33236736.

The previous prime is 66473443. The next prime is 66473489. The reversal of 66473474 is 47437466.

66473474 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 60918025 + 5555449 = 7805^2 + 2357^2 .

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 as a sum of consecutive naturals, namely, 16618367 + ... + 16618370.

Almost surely, 2^66473474 is an apocalyptic number.

66473474 is a deficient number, since it is larger than the sum of its proper divisors (33236740).

66473474 is a wasteful number, since it uses less digits than its factorization.

66473474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33236739.

The product of its digits is 338688, while the sum is 41.

The square root of 66473474 is about 8153.1266395169. The cubic root of 66473474 is about 405.0880751395.

The spelling of 66473474 in words is "sixty-six million, four hundred seventy-three thousand, four hundred seventy-four".