214868261 has 2 divisors, whose sum is σ = 214868262. Its totient is φ = 214868260.

The previous prime is 214868243. The next prime is 214868267. The reversal of 214868261 is 162868412.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 184552225 + 30316036 = 13585^2 + 5506^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-214868261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (214868267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107434130 + 107434131.

It is an arithmetic number, because the mean of its divisors is an integer number (107434131).

Almost surely, 2^214868261 is an apocalyptic number.

It is an amenable number.

214868261 is a deficient number, since it is larger than the sum of its proper divisors (1).

214868261 is an equidigital number, since it uses as much as digits as its factorization.

214868261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36864, while the sum is 38.

The square root of 214868261 is about 14658.3853476432. The cubic root of 214868261 is about 598.9502579925.

The spelling of 214868261 in words is "two hundred fourteen million, eight hundred sixty-eight thousand, two hundred sixty-one".