846646001 has 2 divisors, whose sum is σ = 846646002. Its totient is φ = 846646000.

The previous prime is 846645997. The next prime is 846646013. The reversal of 846646001 is 100646648.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 596531776 + 250114225 = 24424^2 + 15815^2 .

It is a cyclic number.

It is not a de Polignac number, because 846646001 - 2² = 846645997 is a prime.

It is not a weakly prime, because it can be changed into another prime (846646501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 423323000 + 423323001.

It is an arithmetic number, because the mean of its divisors is an integer number (423323001).

Almost surely, 2^846646001 is an apocalyptic number.

It is an amenable number.

846646001 is a deficient number, since it is larger than the sum of its proper divisors (1).

846646001 is an equidigital number, since it uses as much as digits as its factorization.

846646001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27648, while the sum is 35.

The square root of 846646001 is about 29097.1820113220. The cubic root of 846646001 is about 946.0206588435.

The spelling of 846646001 in words is "eight hundred forty-six million, six hundred forty-six thousand, one".