66706170 has 32 divisors (see below), whose sum is σ = 160921728. Its totient is φ = 17696448.

The previous prime is 66706163. The next prime is 66706183. The reversal of 66706170 is 7160766.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 267 + ... + 11553.

It is an arithmetic number, because the mean of its divisors is an integer number (5028804).

Almost surely, 2^66706170 is an apocalyptic number.

66706170 is an abundant number, since it is smaller than the sum of its proper divisors (94215558).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66706170 is a wasteful number, since it uses less digits than its factorization.

66706170 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11494.

The product of its (nonzero) digits is 10584, while the sum is 33.

The square root of 66706170 is about 8167.3845262728. The cubic root of 66706170 is about 405.5602063088.

The spelling of 66706170 in words is "sixty-six million, seven hundred six thousand, one hundred seventy".