975559643 has 2 divisors, whose sum is σ = 975559644. Its totient is φ = 975559642.

The previous prime is 975559633. The next prime is 975559687. The reversal of 975559643 is 346955579.

It is a weak prime.

It is an emirp because it is prime and its reverse (346955579) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 975559643 - 2²⁰ = 974511067 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (975559633) 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, 487779821 + 487779822.

It is an arithmetic number, because the mean of its divisors is an integer number (487779822).

Almost surely, 2^975559643 is an apocalyptic number.

975559643 is a deficient number, since it is larger than the sum of its proper divisors (1).

975559643 is an equidigital number, since it uses as much as digits as its factorization.

975559643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5103000, while the sum is 53.

The square root of 975559643 is about 31233.9501664455. The cubic root of 975559643 is about 991.7859280932.

The spelling of 975559643 in words is "nine hundred seventy-five million, five hundred fifty-nine thousand, six hundred forty-three".