66573417 has 16 divisors (see below), whose sum is σ = 92378880. Its totient is φ = 42610512.

The previous prime is 66573401. The next prime is 66573427. The reversal of 66573417 is 71437566.

It is not a de Polignac number, because 66573417 - 2⁴ = 66573401 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66573427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3238 + ... + 11984.

It is an arithmetic number, because the mean of its divisors is an integer number (5773680).

Almost surely, 2^66573417 is an apocalyptic number.

It is an amenable number.

66573417 is a deficient number, since it is larger than the sum of its proper divisors (25805463).

66573417 is a wasteful number, since it uses less digits than its factorization.

66573417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8852.

The product of its digits is 105840, while the sum is 39.

The square root of 66573417 is about 8159.2534584973. The cubic root of 66573417 is about 405.2909903871.

The spelling of 66573417 in words is "sixty-six million, five hundred seventy-three thousand, four hundred seventeen".