681000167 has 2 divisors, whose sum is σ = 681000168. Its totient is φ = 681000166.

The previous prime is 681000149. The next prime is 681000191. The reversal of 681000167 is 761000186.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 681000167 - 2¹⁴ = 680983783 is a prime.

It is a super-2 number, since 2×681000167² = 927522454908055778, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (681000107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 340500083 + 340500084.

It is an arithmetic number, because the mean of its divisors is an integer number (340500084).

Almost surely, 2^681000167 is an apocalyptic number.

681000167 is a deficient number, since it is larger than the sum of its proper divisors (1).

681000167 is an equidigital number, since it uses as much as digits as its factorization.

681000167 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 681000167 is about 26095.9799011265. The cubic root of 681000167 is about 879.7968569487.

The spelling of 681000167 in words is "six hundred eighty-one million, one hundred sixty-seven", and thus it is an aban number.