66867473 has 8 divisors (see below), whose sum is σ = 69840960. Its totient is φ = 63955440.

The previous prime is 66867469. The next prime is 66867557. The reversal of 66867473 is 37476866.

66867473 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 66867473 - 2² = 66867469 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66867413) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 13133 + ... + 17498.

It is an arithmetic number, because the mean of its divisors is an integer number (8730120).

Almost surely, 2^66867473 is an apocalyptic number.

It is an amenable number.

66867473 is a deficient number, since it is larger than the sum of its proper divisors (2973487).

66867473 is a wasteful number, since it uses less digits than its factorization.

66867473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30727.

The product of its digits is 1016064, while the sum is 47.

The square root of 66867473 is about 8177.2533897391. The cubic root of 66867473 is about 405.8868398584.

The spelling of 66867473 in words is "sixty-six million, eight hundred sixty-seven thousand, four hundred seventy-three".