170220445 has 16 divisors (see below), whose sum is σ = 210576960. Its totient is φ = 132015744.

The previous prime is 170220443. The next prime is 170220497. The reversal of 170220445 is 544022071.

It is a cyclic number.

It is not a de Polignac number, because 170220445 - 2¹ = 170220443 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (170220443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26566 + ... + 32344.

It is an arithmetic number, because the mean of its divisors is an integer number (13161060).

Almost surely, 2^170220445 is an apocalyptic number.

It is an amenable number.

170220445 is a deficient number, since it is larger than the sum of its proper divisors (40356515).

170220445 is a wasteful number, since it uses less digits than its factorization.

170220445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5964.

The product of its (nonzero) digits is 2240, while the sum is 25.

The square root of 170220445 is about 13046.8557514828. The cubic root of 170220445 is about 554.2051712619.

The spelling of 170220445 in words is "one hundred seventy million, two hundred twenty thousand, four hundred forty-five".