268597421 has 2 divisors, whose sum is σ = 268597422. Its totient is φ = 268597420.

The previous prime is 268597409. The next prime is 268597447. The reversal of 268597421 is 124795862.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 220849321 + 47748100 = 14861^2 + 6910^2 .

It is a cyclic number.

It is not a de Polignac number, because 268597421 - 2¹⁰ = 268596397 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 (268597451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134298710 + 134298711.

It is an arithmetic number, because the mean of its divisors is an integer number (134298711).

Almost surely, 2^268597421 is an apocalyptic number.

It is an amenable number.

268597421 is a deficient number, since it is larger than the sum of its proper divisors (1).

268597421 is an equidigital number, since it uses as much as digits as its factorization.

268597421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 241920, while the sum is 44.

The square root of 268597421 is about 16388.9420341888. The cubic root of 268597421 is about 645.2092912945.

The spelling of 268597421 in words is "two hundred sixty-eight million, five hundred ninety-seven thousand, four hundred twenty-one".