145670605 has 4 divisors (see below), whose sum is σ = 174804732. Its totient is φ = 116536480.

The previous prime is 145670599. The next prime is 145670617. The reversal of 145670605 is 506076541.

It is a happy number.

145670605 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 506076541 = 3677 ⋅137633.

It can be written as a sum of positive squares in 2 ways, for example, as 86657481 + 59013124 = 9309^2 + 7682^2 .

It is not a de Polignac number, because 145670605 - 2³ = 145670597 is a prime.

It is a super-2 number, since 2×145670605² = 42439850322132050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14567056 + ... + 14567065.

It is an arithmetic number, because the mean of its divisors is an integer number (43701183).

Almost surely, 2^145670605 is an apocalyptic number.

It is an amenable number.

145670605 is a deficient number, since it is larger than the sum of its proper divisors (29134127).

145670605 is an equidigital number, since it uses as much as digits as its factorization.

145670605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29134126.

The product of its (nonzero) digits is 25200, while the sum is 34.

The square root of 145670605 is about 12069.4078148019. The cubic root of 145670605 is about 526.1674458586.

The spelling of 145670605 in words is "one hundred forty-five million, six hundred seventy thousand, six hundred five".