340641641 has 2 divisors, whose sum is σ = 340641642. Its totient is φ = 340641640.

The previous prime is 340641619. The next prime is 340641649. The reversal of 340641641 is 146146043.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 216207616 + 124434025 = 14704^2 + 11155^2 .

It is a cyclic number.

It is not a de Polignac number, because 340641641 - 2⁶ = 340641577 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (340641649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170320820 + 170320821.

It is an arithmetic number, because the mean of its divisors is an integer number (170320821).

Almost surely, 2^340641641 is an apocalyptic number.

It is an amenable number.

340641641 is a deficient number, since it is larger than the sum of its proper divisors (1).

340641641 is an equidigital number, since it uses as much as digits as its factorization.

340641641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 340641641 is about 18456.4796480802. The cubic root of 340641641 is about 698.3919830948.

Adding to 340641641 its reverse (146146043), we get a palindrome (486787684).

The spelling of 340641641 in words is "three hundred forty million, six hundred forty-one thousand, six hundred forty-one".