268887197 has 2 divisors, whose sum is σ = 268887198. Its totient is φ = 268887196.

The previous prime is 268887167. The next prime is 268887233. The reversal of 268887197 is 791788862.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 264843076 + 4044121 = 16274^2 + 2011^2 .

It is a cyclic number.

It is not a de Polignac number, because 268887197 - 2⁶ = 268887133 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 (268887137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134443598 + 134443599.

It is an arithmetic number, because the mean of its divisors is an integer number (134443599).

Almost surely, 2^268887197 is an apocalyptic number.

It is an amenable number.

268887197 is a deficient number, since it is larger than the sum of its proper divisors (1).

268887197 is an equidigital number, since it uses as much as digits as its factorization.

268887197 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2709504, while the sum is 56.

The square root of 268887197 is about 16397.7802461187. The cubic root of 268887197 is about 645.4412356558.

The spelling of 268887197 in words is "two hundred sixty-eight million, eight hundred eighty-seven thousand, one hundred ninety-seven".