66970165 has 8 divisors (see below), whose sum is σ = 80814240. Its totient is φ = 53276112.

The previous prime is 66970153. The next prime is 66970187. The reversal of 66970165 is 56107966.

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 66970165 - 2⁹ = 66969653 is a prime.

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 7 ways as a sum of consecutive naturals, for example, 36519 + ... + 38308.

It is an arithmetic number, because the mean of its divisors is an integer number (10101780).

Almost surely, 2^66970165 is an apocalyptic number.

It is an amenable number.

66970165 is a deficient number, since it is larger than the sum of its proper divisors (13844075).

66970165 is a wasteful number, since it uses less digits than its factorization.

66970165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75011.

The product of its (nonzero) digits is 68040, while the sum is 40.

The square root of 66970165 is about 8183.5301062561. The cubic root of 66970165 is about 406.0945143836.

The spelling of 66970165 in words is "sixty-six million, nine hundred seventy thousand, one hundred sixty-five".