146648609 has 2 divisors, whose sum is σ = 146648610. Its totient is φ = 146648608.

The previous prime is 146648599. The next prime is 146648611. The reversal of 146648609 is 906846641.

146648609 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 102718225 + 43930384 = 10135^2 + 6628^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-146648609 is a prime.

Together with 146648611, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 146648609.

It is not a weakly prime, because it can be changed into another prime (146648699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73324304 + 73324305.

It is an arithmetic number, because the mean of its divisors is an integer number (73324305).

Almost surely, 2^146648609 is an apocalyptic number.

It is an amenable number.

146648609 is a deficient number, since it is larger than the sum of its proper divisors (1).

146648609 is an equidigital number, since it uses as much as digits as its factorization.

146648609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 248832, while the sum is 44.

The square root of 146648609 is about 12109.8558620654. The cubic root of 146648609 is about 527.3423489112.

The spelling of 146648609 in words is "one hundred forty-six million, six hundred forty-eight thousand, six hundred nine".