170222868 has 18 divisors (see below), whose sum is σ = 430285674. Its totient is φ = 56740944.

The previous prime is 170222863. The next prime is 170222869. The reversal of 170222868 is 868222071.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 106254864 + 63968004 = 10308^2 + 7998^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 4728413 = 170222868 / (1 + 7 + 0 + 2 + 2 + 2 + 8 + 6 + 8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (170222863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2364171 + ... + 2364242.

Almost surely, 2^170222868 is an apocalyptic number.

170222868 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

170222868 is an abundant number, since it is smaller than the sum of its proper divisors (260062806).

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

170222868 is a wasteful number, since it uses less digits than its factorization.

170222868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4728423 (or 4728418 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The square root of 170222868 is about 13046.9486087744. The cubic root of 170222868 is about 554.2078008574.

The spelling of 170222868 in words is "one hundred seventy million, two hundred twenty-two thousand, eight hundred sixty-eight".