146827609 has 4 divisors (see below), whose sum is σ = 151890660. Its totient is φ = 141764560.

The previous prime is 146827591. The next prime is 146827613. The reversal of 146827609 is 906728641.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 56957209 + 89870400 = 7547^2 + 9480^2 .

It is a cyclic number.

It is not a de Polignac number, because 146827609 - 2²⁵ = 113273177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (146827679) 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 3 ways as a sum of consecutive naturals, for example, 2531482 + ... + 2531539.

It is an arithmetic number, because the mean of its divisors is an integer number (37972665).

Almost surely, 2^146827609 is an apocalyptic number.

It is an amenable number.

146827609 is a deficient number, since it is larger than the sum of its proper divisors (5063051).

146827609 is an equidigital number, since it uses as much as digits as its factorization.

146827609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5063050.

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 146827609 is about 12117.2442824266. The cubic root of 146827609 is about 527.5568205453.

The spelling of 146827609 in words is "one hundred forty-six million, eight hundred twenty-seven thousand, six hundred nine".