683917907 has 2 divisors, whose sum is σ = 683917908. Its totient is φ = 683917906.

The previous prime is 683917873. The next prime is 683917951. The reversal of 683917907 is 709719386.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-683917907 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (683917957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 341958953 + 341958954.

It is an arithmetic number, because the mean of its divisors is an integer number (341958954).

Almost surely, 2^683917907 is an apocalyptic number.

683917907 is a deficient number, since it is larger than the sum of its proper divisors (1).

683917907 is an equidigital number, since it uses as much as digits as its factorization.

683917907 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 571536, while the sum is 50.

The square root of 683917907 is about 26151.8241619968. The cubic root of 683917907 is about 881.0515610264.

The spelling of 683917907 in words is "six hundred eighty-three million, nine hundred seventeen thousand, nine hundred seven".