683906297693 has 2 divisors, whose sum is σ = 683906297694. Its totient is φ = 683906297692.

The previous prime is 683906297671. The next prime is 683906297713. The reversal of 683906297693 is 396792609386.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 642631499449 + 41274798244 = 801643^2 + 203162^2 .

It is a cyclic number.

It is not a de Polignac number, because 683906297693 - 2²⁰ = 683905249117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (683906297603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 341953148846 + 341953148847.

It is an arithmetic number, because the mean of its divisors is an integer number (341953148847).

Almost surely, 2^683906297693 is an apocalyptic number.

It is an amenable number.

683906297693 is a deficient number, since it is larger than the sum of its proper divisors (1).

683906297693 is an equidigital number, since it uses as much as digits as its factorization.

683906297693 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 158723712, while the sum is 68.

The spelling of 683906297693 in words is "six hundred eighty-three billion, nine hundred six million, two hundred ninety-seven thousand, six hundred ninety-three".