146605009 has 2 divisors, whose sum is σ = 146605010. Its totient is φ = 146605008.

The previous prime is 146605001. The next prime is 146605051. The reversal of 146605009 is 900506641.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 146531025 + 73984 = 12105^2 + 272^2 .

It is a cyclic number.

It is not a de Polignac number, because 146605009 - 2³ = 146605001 is a prime.

It is not a weakly prime, because it can be changed into another prime (146605001) 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 as a sum of consecutive naturals, namely, 73302504 + 73302505.

It is an arithmetic number, because the mean of its divisors is an integer number (73302505).

Almost surely, 2^146605009 is an apocalyptic number.

It is an amenable number.

146605009 is a deficient number, since it is larger than the sum of its proper divisors (1).

146605009 is an equidigital number, since it uses as much as digits as its factorization.

146605009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 146605009 is about 12108.0555416632. The cubic root of 146605009 is about 527.2900824639.

The spelling of 146605009 in words is "one hundred forty-six million, six hundred five thousand, nine".