694947313243 has 2 divisors, whose sum is σ = 694947313244. Its totient is φ = 694947313242.

The previous prime is 694947313183. The next prime is 694947313321. The reversal of 694947313243 is 342313749496.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-694947313243 is a prime.

It is not a weakly prime, because it can be changed into another prime (694947313043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 347473656621 + 347473656622.

It is an arithmetic number, because the mean of its divisors is an integer number (347473656622).

Almost surely, 2^694947313243 is an apocalyptic number.

694947313243 is a deficient number, since it is larger than the sum of its proper divisors (1).

694947313243 is an equidigital number, since it uses as much as digits as its factorization.

694947313243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11757312, while the sum is 55.

The spelling of 694947313243 in words is "six hundred ninety-four billion, nine hundred forty-seven million, three hundred thirteen thousand, two hundred forty-three".