66674085 has 16 divisors (see below), whose sum is σ = 112954176. Its totient is φ = 33467648.

The previous prime is 66674011. The next prime is 66674107. The reversal of 66674085 is 58047666.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 66674085 - 2⁸ = 66673829 is a prime.

It is a super-2 number, since 2×66674085² = 8890867221174450, which contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

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, 130479 + ... + 130988.

It is an arithmetic number, because the mean of its divisors is an integer number (7059636).

Almost surely, 2^66674085 is an apocalyptic number.

It is an amenable number.

66674085 is a deficient number, since it is larger than the sum of its proper divisors (46280091).

66674085 is a wasteful number, since it uses less digits than its factorization.

66674085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261492.

The product of its (nonzero) digits is 241920, while the sum is 42.

The square root of 66674085 is about 8165.4200749257. The cubic root of 66674085 is about 405.4951724143.

The spelling of 66674085 in words is "sixty-six million, six hundred seventy-four thousand, eighty-five".