691734017071 has 8 divisors (see below), whose sum is σ = 694728438624. Its totient is φ = 688740622080.

The previous prime is 691734017057. The next prime is 691734017077. The reversal of 691734017071 is 170710437196.

691734017071 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 691734017071 - 2¹¹ = 691734015023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (691734017077) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1109646 + ... + 1617028.

It is an arithmetic number, because the mean of its divisors is an integer number (86841054828).

Almost surely, 2^691734017071 is an apocalyptic number.

691734017071 is a deficient number, since it is larger than the sum of its proper divisors (2994421553).

691734017071 is a wasteful number, since it uses less digits than its factorization.

691734017071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 513281.

The product of its (nonzero) digits is 222264, while the sum is 46.

The spelling of 691734017071 in words is "six hundred ninety-one billion, seven hundred thirty-four million, seventeen thousand, seventy-one".