697046839439 has 2 divisors, whose sum is σ = 697046839440. Its totient is φ = 697046839438.

The previous prime is 697046839289. The next prime is 697046839441. The reversal of 697046839439 is 934938640796.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 697046839439 - 2¹² = 697046835343 is a prime.

Together with 697046839441, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (697046830439) 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, 348523419719 + 348523419720.

It is an arithmetic number, because the mean of its divisors is an integer number (348523419720).

Almost surely, 2^697046839439 is an apocalyptic number.

697046839439 is a deficient number, since it is larger than the sum of its proper divisors (1).

697046839439 is an equidigital number, since it uses as much as digits as its factorization.

697046839439 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 211631616, while the sum is 68.

The spelling of 697046839439 in words is "six hundred ninety-seven billion, forty-six million, eight hundred thirty-nine thousand, four hundred thirty-nine".