145566873 has 6 divisors (see below), whose sum is σ = 210263274. Its totient is φ = 97044576.

The previous prime is 145566859. The next prime is 145566877. The reversal of 145566873 is 378665541.

145566873 is a `hidden beast` number, since 1 + 4 + 5 + 566 + 87 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 143352729 + 2214144 = 11973^2 + 1488^2 .

It is not a de Polignac number, because 145566873 - 2¹³ = 145558681 is a prime.

It is not an unprimeable number, because it can be changed into a prime (145566877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8087040 + ... + 8087057.

It is an arithmetic number, because the mean of its divisors is an integer number (35043879).

Almost surely, 2^145566873 is an apocalyptic number.

It is an amenable number.

145566873 is a deficient number, since it is larger than the sum of its proper divisors (64696401).

145566873 is a wasteful number, since it uses less digits than its factorization.

145566873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16174103 (or 16174100 counting only the distinct ones).

The product of its digits is 604800, while the sum is 45.

The square root of 145566873 is about 12065.1097384151. The cubic root of 145566873 is about 526.0425216339.

The spelling of 145566873 in words is "one hundred forty-five million, five hundred sixty-six thousand, eight hundred seventy-three".