268940655 has 60 divisors (see below), whose sum is σ = 498875256. Its totient is φ = 138607200.

The previous prime is 268940653. The next prime is 268940669. The reversal of 268940655 is 556049862.

It is not a de Polignac number, because 268940655 - 2¹ = 268940653 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 268940655.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268940653) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 388860 + ... + 389550.

Almost surely, 2^268940655 is an apocalyptic number.

268940655 is a deficient number, since it is larger than the sum of its proper divisors (229934601).

268940655 is an equidigital number, since it uses as much as digits as its factorization.

268940655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 770 (or 730 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 45.

The square root of 268940655 is about 16399.4102028091. The cubic root of 268940655 is about 645.4840066413.

The spelling of 268940655 in words is "two hundred sixty-eight million, nine hundred forty thousand, six hundred fifty-five".