683655730397 has 2 divisors, whose sum is σ = 683655730398. Its totient is φ = 683655730396.

The previous prime is 683655730313. The next prime is 683655730447. The reversal of 683655730397 is 793037556386.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 585269370841 + 98386359556 = 765029^2 + 313666^2 .

It is a cyclic number.

It is not a de Polignac number, because 683655730397 - 2⁸ = 683655730141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (683655730097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 341827865198 + 341827865199.

It is an arithmetic number, because the mean of its divisors is an integer number (341827865199).

Almost surely, 2^683655730397 is an apocalyptic number.

It is an amenable number.

683655730397 is a deficient number, since it is larger than the sum of its proper divisors (1).

683655730397 is an equidigital number, since it uses as much as digits as its factorization.

683655730397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 85730400, while the sum is 62.

The spelling of 683655730397 in words is "six hundred eighty-three billion, six hundred fifty-five million, seven hundred thirty thousand, three hundred ninety-seven".