145670969 has 2 divisors, whose sum is σ = 145670970. Its totient is φ = 145670968.

The previous prime is 145670963. The next prime is 145671013. The reversal of 145670969 is 969076541.

145670969 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 78234025 + 67436944 = 8845^2 + 8212^2 .

It is an emirp because it is prime and its reverse (969076541) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145670969 is a prime.

It is a super-2 number, since 2×145670969² = 42440062418797922, which contains 22 as substring.

It is a Chen prime.

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

It is not a weakly prime, because it can be changed into another prime (145670963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72835484 + 72835485.

It is an arithmetic number, because the mean of its divisors is an integer number (72835485).

Almost surely, 2^145670969 is an apocalyptic number.

It is an amenable number.

145670969 is a deficient number, since it is larger than the sum of its proper divisors (1).

145670969 is an equidigital number, since it uses as much as digits as its factorization.

145670969 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 408240, while the sum is 47.

The square root of 145670969 is about 12069.4228942398. The cubic root of 145670969 is about 526.1678841186.

The spelling of 145670969 in words is "one hundred forty-five million, six hundred seventy thousand, nine hundred sixty-nine".