167272681 has 2 divisors, whose sum is σ = 167272682. Its totient is φ = 167272680.

The previous prime is 167272649. The next prime is 167272691. The reversal of 167272681 is 186272761.

167272681 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 159896025 + 7376656 = 12645^2 + 2716^2 .

It is an emirp because it is prime and its reverse (186272761) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 167272681 - 2⁵ = 167272649 is a prime.

It is a super-2 number, since 2×167272681² = 55960299617855522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (167272601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83636340 + 83636341.

It is an arithmetic number, because the mean of its divisors is an integer number (83636341).

Almost surely, 2^167272681 is an apocalyptic number.

It is an amenable number.

167272681 is a deficient number, since it is larger than the sum of its proper divisors (1).

167272681 is an equidigital number, since it uses as much as digits as its factorization.

167272681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 56448, while the sum is 40.

The square root of 167272681 is about 12933.3940247717. The cubic root of 167272681 is about 550.9874064291.

The spelling of 167272681 in words is "one hundred sixty-seven million, two hundred seventy-two thousand, six hundred eighty-one".