681680174067 has 12 divisors (see below), whose sum is σ = 990089193184. Its totient is φ = 451942655760.

The previous prime is 681680174057. The next prime is 681680174083. The reversal of 681680174067 is 760471086186.

681680174067 is a `hidden beast` number, since 68 + 168 + 0 + 17 + 406 + 7 = 666.

It is not a de Polignac number, because 681680174067 - 2⁶ = 681680174003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (681680174057) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 209231083 + ... + 209234340.

Almost surely, 2^681680174067 is an apocalyptic number.

681680174067 is a deficient number, since it is larger than the sum of its proper divisors (308409019117).

681680174067 is a wasteful number, since it uses less digits than its factorization.

681680174067 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418465610 (or 418465607 counting only the distinct ones).

The product of its (nonzero) digits is 2709504, while the sum is 54.

The spelling of 681680174067 in words is "six hundred eighty-one billion, six hundred eighty million, one hundred seventy-four thousand, sixty-seven".