246646891 has 2 divisors, whose sum is σ = 246646892. Its totient is φ = 246646890.

The previous prime is 246646889. The next prime is 246646901. The reversal of 246646891 is 198646642.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 246646891 - 2¹ = 246646889 is a prime.

Together with 246646889, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (246646801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 123323445 + 123323446.

It is an arithmetic number, because the mean of its divisors is an integer number (123323446).

Almost surely, 2^246646891 is an apocalyptic number.

246646891 is a deficient number, since it is larger than the sum of its proper divisors (1).

246646891 is an equidigital number, since it uses as much as digits as its factorization.

246646891 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 497664, while the sum is 46.

The square root of 246646891 is about 15704.9957338421. The cubic root of 246646891 is about 627.1314034484.

The spelling of 246646891 in words is "two hundred forty-six million, six hundred forty-six thousand, eight hundred ninety-one".