246667009 has 2 divisors, whose sum is σ = 246667010. Its totient is φ = 246667008.

The previous prime is 246667007. The next prime is 246667051. The reversal of 246667009 is 900766642.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 245862400 + 804609 = 15680^2 + 897^2 .

It is a cyclic number.

It is not a de Polignac number, because 246667009 - 2¹ = 246667007 is a prime.

It is a super-2 number, since 2×246667009² = 121689226658012162, which contains 22 as substring.

Together with 246667007, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (246667007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 123333504 + 123333505.

It is an arithmetic number, because the mean of its divisors is an integer number (123333505).

Almost surely, 2^246667009 is an apocalyptic number.

It is an amenable number.

246667009 is a deficient number, since it is larger than the sum of its proper divisors (1).

246667009 is an equidigital number, since it uses as much as digits as its factorization.

246667009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108864, while the sum is 40.

The square root of 246667009 is about 15705.6362176131. The cubic root of 246667009 is about 627.1484538512.

The spelling of 246667009 in words is "two hundred forty-six million, six hundred sixty-seven thousand, nine".