340563653 has 2 divisors, whose sum is σ = 340563654. Its totient is φ = 340563652.

The previous prime is 340563649. The next prime is 340563659. The reversal of 340563653 is 356365043.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 336245569 + 4318084 = 18337^2 + 2078^2 .

It is a cyclic number.

It is not a de Polignac number, because 340563653 - 2² = 340563649 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (340563659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170281826 + 170281827.

It is an arithmetic number, because the mean of its divisors is an integer number (170281827).

Almost surely, 2^340563653 is an apocalyptic number.

It is an amenable number.

340563653 is a deficient number, since it is larger than the sum of its proper divisors (1).

340563653 is an equidigital number, since it uses as much as digits as its factorization.

340563653 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 97200, while the sum is 35.

The square root of 340563653 is about 18454.3667732057. The cubic root of 340563653 is about 698.3386813797.

The spelling of 340563653 in words is "three hundred forty million, five hundred sixty-three thousand, six hundred fifty-three".