167713681 has 2 divisors, whose sum is σ = 167713682. Its totient is φ = 167713680.

The previous prime is 167713661. The next prime is 167713727. The reversal of 167713681 is 186317761.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 164891281 + 2822400 = 12841^2 + 1680^2 .

It is a cyclic number.

It is not a de Polignac number, because 167713681 - 2²³ = 159325073 is a prime.

It is a super-2 number, since 2×167713681² = 56255757589139522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (167713621) 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, 83856840 + 83856841.

It is an arithmetic number, because the mean of its divisors is an integer number (83856841).

Almost surely, 2^167713681 is an apocalyptic number.

It is an amenable number.

167713681 is a deficient number, since it is larger than the sum of its proper divisors (1).

167713681 is an equidigital number, since it uses as much as digits as its factorization.

167713681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 42336, while the sum is 40.

The square root of 167713681 is about 12950.4316916464. The cubic root of 167713681 is about 551.4711917874.

The spelling of 167713681 in words is "one hundred sixty-seven million, seven hundred thirteen thousand, six hundred eighty-one".