797617643 has 2 divisors, whose sum is σ = 797617644. Its totient is φ = 797617642.

The previous prime is 797617627. The next prime is 797617673. The reversal of 797617643 is 346716797.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 797617643 - 2⁴ = 797617627 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 797617591 and 797617600.

It is not a weakly prime, because it can be changed into another prime (797617673) 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, 398808821 + 398808822.

It is an arithmetic number, because the mean of its divisors is an integer number (398808822).

Almost surely, 2^797617643 is an apocalyptic number.

797617643 is a deficient number, since it is larger than the sum of its proper divisors (1).

797617643 is an equidigital number, since it uses as much as digits as its factorization.

797617643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1333584, while the sum is 50.

The square root of 797617643 is about 28242.1253272483. The cubic root of 797617643 is about 927.3953570161.

The spelling of 797617643 in words is "seven hundred ninety-seven million, six hundred seventeen thousand, six hundred forty-three".