66170105 has 8 divisors (see below), whose sum is σ = 81341064. Its totient is φ = 51644800.

The previous prime is 66170101. The next prime is 66170107. The reversal of 66170105 is 50107166.

It can be written as a sum of positive squares in 4 ways, for example, as 2042041 + 64128064 = 1429^2 + 8008^2 .

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

It is not a de Polignac number, because 66170105 - 2² = 66170101 is a prime.

It is a super-2 number, since 2×66170105² = 8756965591422050, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (66170101) 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 7 ways as a sum of consecutive naturals, for example, 161186 + ... + 161595.

It is an arithmetic number, because the mean of its divisors is an integer number (10167633).

Almost surely, 2^66170105 is an apocalyptic number.

It is an amenable number.

66170105 is a deficient number, since it is larger than the sum of its proper divisors (15170959).

66170105 is a wasteful number, since it uses less digits than its factorization.

66170105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322827.

The product of its (nonzero) digits is 1260, while the sum is 26.

The square root of 66170105 is about 8134.5009066322. The cubic root of 66170105 is about 404.4708936740.

The spelling of 66170105 in words is "sixty-six million, one hundred seventy thousand, one hundred five".