170220004 has 6 divisors (see below), whose sum is σ = 297885014. Its totient is φ = 85110000.

The previous prime is 170219989. The next prime is 170220049. The reversal of 170220004 is 400022071.

It can be written as a sum of positive squares in only one way, i.e., 161798400 + 8421604 = 12720^2 + 2902^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 170220004.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21277497 + ... + 21277504.

Almost surely, 2^170220004 is an apocalyptic number.

It is an amenable number.

170220004 is a deficient number, since it is larger than the sum of its proper divisors (127665010).

170220004 is a wasteful number, since it uses less digits than its factorization.

170220004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42555005 (or 42555003 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 16.

The square root of 170220004 is about 13046.8388508481. The cubic root of 170220004 is about 554.2046926576.

Adding to 170220004 its reverse (400022071), we get a palindrome (570242075).

The spelling of 170220004 in words is "one hundred seventy million, two hundred twenty thousand, four".