164243417 has 8 divisors (see below), whose sum is σ = 181192200. Its totient is φ = 147911040.

The previous prime is 164243411. The next prime is 164243423. The reversal of 164243417 is 714342461.

It is an interprime number because it is at equal distance from previous prime (164243411) and next prime (164243423).

It can be written as a sum of positive squares in 4 ways, for example, as 14523721 + 149719696 = 3811^2 + 12236^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 164243417 - 2¹⁴ = 164227033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164243411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 153542 + ... + 154607.

It is an arithmetic number, because the mean of its divisors is an integer number (22649025).

Almost surely, 2^164243417 is an apocalyptic number.

It is an amenable number.

164243417 is a deficient number, since it is larger than the sum of its proper divisors (16948783).

164243417 is a wasteful number, since it uses less digits than its factorization.

164243417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308203.

The product of its digits is 16128, while the sum is 32.

The square root of 164243417 is about 12815.7487881122. The cubic root of 164243417 is about 547.6410450955.

Adding to 164243417 its reverse (714342461), we get a palindrome (878585878).

The spelling of 164243417 in words is "one hundred sixty-four million, two hundred forty-three thousand, four hundred seventeen".