170222645 has 8 divisors (see below), whose sum is σ = 204440760. Its totient is φ = 136062400.

The previous prime is 170222629. The next prime is 170222659. The reversal of 170222645 is 546222071.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 56821444 + 113401201 = 7538^2 + 10649^2 .

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

It is not a de Polignac number, because 170222645 - 2⁴ = 170222629 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7706 + ... + 19995.

It is an arithmetic number, because the mean of its divisors is an integer number (25555095).

Almost surely, 2^170222645 is an apocalyptic number.

It is an amenable number.

170222645 is a deficient number, since it is larger than the sum of its proper divisors (34218115).

170222645 is a wasteful number, since it uses less digits than its factorization.

170222645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28935.

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 170222645 is about 13046.9400627120. The cubic root of 170222645 is about 554.2075588445.

The spelling of 170222645 in words is "one hundred seventy million, two hundred twenty-two thousand, six hundred forty-five".