274861 has 2 divisors, whose sum is σ = 274862. Its totient is φ = 274860.

The previous prime is 274853. The next prime is 274867. The reversal of 274861 is 168472.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 202500 + 72361 = 450^2 + 269^2 .

It is a cyclic number.

It is not a de Polignac number, because 274861 - 2³ = 274853 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 (274867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 137430 + 137431.

It is an arithmetic number, because the mean of its divisors is an integer number (137431).

2²⁷⁴⁸⁶¹ is an apocalyptic number.

It is an amenable number.

274861 is a deficient number, since it is larger than the sum of its proper divisors (1).

274861 is an equidigital number, since it uses as much as digits as its factorization.

274861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2688, while the sum is 28.

The square root of 274861 is about 524.2718760338. The cubic root of 274861 is about 65.0186139984.

It can be divided in two parts, 2748 and 61, that added together give a square (2809 = 53²).

The spelling of 274861 in words is "two hundred seventy-four thousand, eight hundred sixty-one".