862261 has 2 divisors, whose sum is σ = 862262. Its totient is φ = 862260.

The previous prime is 862259. The next prime is 862273. The reversal of 862261 is 162268.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 592900 + 269361 = 770^2 + 519^2 .

It is a cyclic number.

It is not a de Polignac number, because 862261 - 2¹ = 862259 is a prime.

Together with 862259, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (862231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 431130 + 431131.

It is an arithmetic number, because the mean of its divisors is an integer number (431131).

2⁸⁶²²⁶¹ is an apocalyptic number.

It is an amenable number.

862261 is a deficient number, since it is larger than the sum of its proper divisors (1).

862261 is an equidigital number, since it uses as much as digits as its factorization.

862261 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 862261 is about 928.5800988606. The cubic root of 862261 is about 95.1801199573.

The spelling of 862261 in words is "eight hundred sixty-two thousand, two hundred sixty-one".