268955861 has 8 divisors (see below), whose sum is σ = 286003224. Its totient is φ = 252044800.

The previous prime is 268955839. The next prime is 268955873. The reversal of 268955861 is 168559862.

It can be written as a sum of positive squares in 4 ways, for example, as 62315236 + 206640625 = 7894^2 + 14375^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 268955861 - 2¹⁰ = 268954837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268955821) 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 in 7 ways as a sum of consecutive naturals, for example, 29990 + ... + 37911.

It is an arithmetic number, because the mean of its divisors is an integer number (35750403).

Almost surely, 2^268955861 is an apocalyptic number.

It is an amenable number.

268955861 is a deficient number, since it is larger than the sum of its proper divisors (17047363).

268955861 is a wasteful number, since it uses less digits than its factorization.

268955861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68151.

The product of its digits is 1036800, while the sum is 50.

The square root of 268955861 is about 16399.8738104901. The cubic root of 268955861 is about 645.4961717102.

The spelling of 268955861 in words is "two hundred sixty-eight million, nine hundred fifty-five thousand, eight hundred sixty-one".