66170532 has 12 divisors (see below), whose sum is σ = 154397936. Its totient is φ = 22056840.

The previous prime is 66170519. The next prime is 66170539. The reversal of 66170532 is 23507166.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 66170532.

It is not an unprimeable number, because it can be changed into a prime (66170539) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2757094 + ... + 2757117.

Almost surely, 2^66170532 is an apocalyptic number.

It is an amenable number.

66170532 is an abundant number, since it is smaller than the sum of its proper divisors (88227404).

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

66170532 is a wasteful number, since it uses less digits than its factorization.

66170532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5514218 (or 5514216 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 30.

The square root of 66170532 is about 8134.5271528221. The cubic root of 66170532 is about 404.4717636978.

Adding to 66170532 its reverse (23507166), we get a palindrome (89677698).

The spelling of 66170532 in words is "sixty-six million, one hundred seventy thousand, five hundred thirty-two".