268508965 has 32 divisors (see below), whose sum is σ = 349889760. Its totient is φ = 197074944.

The previous prime is 268508953. The next prime is 268508983. The reversal of 268508965 is 569805862.

It can be written as a sum of positive squares in 16 ways, for example, as 2362369 + 266146596 = 1537^2 + 16314^2 .

It is a cyclic number.

It is not a de Polignac number, because 268508965 - 2⁷ = 268508837 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 676147 + ... + 676543.

It is an arithmetic number, because the mean of its divisors is an integer number (10934055).

Almost surely, 2^268508965 is an apocalyptic number.

It is an amenable number.

268508965 is a deficient number, since it is larger than the sum of its proper divisors (81380795).

268508965 is a wasteful number, since it uses less digits than its factorization.

268508965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 601.

The product of its (nonzero) digits is 1036800, while the sum is 49.

The square root of 268508965 is about 16386.2431630926. The cubic root of 268508965 is about 645.1384555444.

The spelling of 268508965 in words is "two hundred sixty-eight million, five hundred eight thousand, nine hundred sixty-five".