145670165 has 8 divisors (see below), whose sum is σ = 174873048. Its totient is φ = 116490240.

The previous prime is 145670159. The next prime is 145670167. The reversal of 145670165 is 561076541.

It can be written as a sum of positive squares in 4 ways, for example, as 9084196 + 136585969 = 3014^2 + 11687^2 .

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

It is not a de Polignac number, because 145670165 - 2⁴ = 145670149 is a prime.

It is a super-2 number, since 2×145670165² = 42439593942254450, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145670167) 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 7 ways as a sum of consecutive naturals, for example, 15125 + ... + 22805.

It is an arithmetic number, because the mean of its divisors is an integer number (21859131).

Almost surely, 2^145670165 is an apocalyptic number.

It is an amenable number.

145670165 is a deficient number, since it is larger than the sum of its proper divisors (29202883).

145670165 is an equidigital number, since it uses as much as digits as its factorization.

145670165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11479.

The product of its (nonzero) digits is 25200, while the sum is 35.

The square root of 145670165 is about 12069.3895868847. The cubic root of 145670165 is about 526.1669160929.

The spelling of 145670165 in words is "one hundred forty-five million, six hundred seventy thousand, one hundred sixty-five".