246648821 has 2 divisors, whose sum is σ = 246648822. Its totient is φ = 246648820.

The previous prime is 246648793. The next prime is 246648863. The reversal of 246648821 is 128846642.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 246144721 + 504100 = 15689^2 + 710^2 .

It is a cyclic number.

It is not a de Polignac number, because 246648821 - 2¹⁴ = 246632437 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (246642821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 123324410 + 123324411.

It is an arithmetic number, because the mean of its divisors is an integer number (123324411).

Almost surely, 2^246648821 is an apocalyptic number.

It is an amenable number.

246648821 is a deficient number, since it is larger than the sum of its proper divisors (1).

246648821 is an equidigital number, since it uses as much as digits as its factorization.

246648821 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 147456, while the sum is 41.

The square root of 246648821 is about 15705.0571791382. The cubic root of 246648821 is about 627.1330392017.

The spelling of 246648821 in words is "two hundred forty-six million, six hundred forty-eight thousand, eight hundred twenty-one".