262681 has 2 divisors, whose sum is σ = 262682. Its totient is φ = 262680.

The previous prime is 262657. The next prime is 262693. The reversal of 262681 is 186262.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 259081 + 3600 = 509^2 + 60^2 .

It is a cyclic number.

It is not a de Polignac number, because 262681 - 2⁵ = 262649 is a prime.

It is a super-2 number, since 2×262681² = 138002615522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (262621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131340 + 131341.

It is an arithmetic number, because the mean of its divisors is an integer number (131341).

2²⁶²⁶⁸¹ is an apocalyptic number.

It is an amenable number.

262681 is a deficient number, since it is larger than the sum of its proper divisors (1).

262681 is an equidigital number, since it uses as much as digits as its factorization.

262681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1152, while the sum is 25.

The square root of 262681 is about 512.5241457727. The cubic root of 262681 is about 64.0436713653.

The spelling of 262681 in words is "two hundred sixty-two thousand, six hundred eighty-one".