268220671 has 2 divisors, whose sum is σ = 268220672. Its totient is φ = 268220670.

The previous prime is 268220657. The next prime is 268220677. The reversal of 268220671 is 176022862.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 268220671 - 2⁵ = 268220639 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (268220677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134110335 + 134110336.

It is an arithmetic number, because the mean of its divisors is an integer number (134110336).

Almost surely, 2^268220671 is an apocalyptic number.

268220671 is a deficient number, since it is larger than the sum of its proper divisors (1).

268220671 is an equidigital number, since it uses as much as digits as its factorization.

268220671 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 268220671 is about 16377.4439702904. The cubic root of 268220671 is about 644.9074810710.

The spelling of 268220671 in words is "two hundred sixty-eight million, two hundred twenty thousand, six hundred seventy-one".