691680259167 has 16 divisors (see below), whose sum is σ = 923421864960. Its totient is φ = 460529784000.

The previous prime is 691680259117. The next prime is 691680259229. The reversal of 691680259167 is 761952086196.

691680259167 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 691680259167 - 2¹¹ = 691680257119 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 691680259167.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (691680259117) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7687084 + ... + 7776542.

It is an arithmetic number, because the mean of its divisors is an integer number (57713866560).

Almost surely, 2^691680259167 is an apocalyptic number.

691680259167 is a deficient number, since it is larger than the sum of its proper divisors (231741605793).

691680259167 is a wasteful number, since it uses less digits than its factorization.

691680259167 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92734.

The product of its (nonzero) digits is 9797760, while the sum is 60.

The spelling of 691680259167 in words is "six hundred ninety-one billion, six hundred eighty million, two hundred fifty-nine thousand, one hundred sixty-seven".