697956071 has 2 divisors, whose sum is σ = 697956072. Its totient is φ = 697956070.

The previous prime is 697956043. The next prime is 697956101. The reversal of 697956071 is 170659796.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 697956071 - 2¹⁰ = 697955047 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (697956011) 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, 348978035 + 348978036.

It is an arithmetic number, because the mean of its divisors is an integer number (348978036).

Almost surely, 2^697956071 is an apocalyptic number.

697956071 is a deficient number, since it is larger than the sum of its proper divisors (1).

697956071 is an equidigital number, since it uses as much as digits as its factorization.

697956071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 714420, while the sum is 50.

The square root of 697956071 is about 26418.8582455790. The cubic root of 697956071 is about 887.0389627113.

The spelling of 697956071 in words is "six hundred ninety-seven million, nine hundred fifty-six thousand, seventy-one".