683968427 has 2 divisors, whose sum is σ = 683968428. Its totient is φ = 683968426.

The previous prime is 683968399. The next prime is 683968501. The reversal of 683968427 is 724869386.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 683968427 - 2¹² = 683964331 is a prime.

It is not a weakly prime, because it can be changed into another prime (683968627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 341984213 + 341984214.

It is an arithmetic number, because the mean of its divisors is an integer number (341984214).

Almost surely, 2^683968427 is an apocalyptic number.

683968427 is a deficient number, since it is larger than the sum of its proper divisors (1).

683968427 is an equidigital number, since it uses as much as digits as its factorization.

683968427 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3483648, while the sum is 53.

The square root of 683968427 is about 26152.7900423645. The cubic root of 683968427 is about 881.0732544823.

The spelling of 683968427 in words is "six hundred eighty-three million, nine hundred sixty-eight thousand, four hundred twenty-seven".