146668009 has 2 divisors, whose sum is σ = 146668010. Its totient is φ = 146668008.

The previous prime is 146667991. The next prime is 146668043. The reversal of 146668009 is 900866641.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 131675625 + 14992384 = 11475^2 + 3872^2 .

It is a cyclic number.

It is not a de Polignac number, because 146668009 - 2¹³ = 146659817 is a prime.

It is not a weakly prime, because it can be changed into another prime (146668069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73334004 + 73334005.

It is an arithmetic number, because the mean of its divisors is an integer number (73334005).

Almost surely, 2^146668009 is an apocalyptic number.

It is an amenable number.

146668009 is a deficient number, since it is larger than the sum of its proper divisors (1).

146668009 is an equidigital number, since it uses as much as digits as its factorization.

146668009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 146668009 is about 12110.6568360267. The cubic root of 146668009 is about 527.3656017525.

The spelling of 146668009 in words is "one hundred forty-six million, six hundred sixty-eight thousand, nine".