162686261 has 2 divisors, whose sum is σ = 162686262. Its totient is φ = 162686260.

The previous prime is 162686231. The next prime is 162686273.

162686261 is nontrivially palindromic in base 10.

162686261 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., 151167025 + 11519236 = 12295^2 + 3394^2 .

It is a palprime.

It is a cyclic number.

It is not a de Polignac number, because 162686261 - 2¹⁴ = 162669877 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (162686221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81343130 + 81343131.

It is an arithmetic number, because the mean of its divisors is an integer number (81343131).

Almost surely, 2^162686261 is an apocalyptic number.

It is an amenable number.

162686261 is a deficient number, since it is larger than the sum of its proper divisors (1).

162686261 is an equidigital number, since it uses as much as digits as its factorization.

162686261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 41472, while the sum is 38.

The square root of 162686261 is about 12754.8524491662. The cubic root of 162686261 is about 545.9048582585.

The spelling of 162686261 in words is "one hundred sixty-two million, six hundred eighty-six thousand, two hundred sixty-one".