268213605 has 32 divisors (see below), whose sum is σ = 484306560. Its totient is φ = 125556480.

The previous prime is 268213601. The next prime is 268213639. The reversal of 268213605 is 506312862.

It is not a de Polignac number, because 268213605 - 2² = 268213601 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268213601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23242 + ... + 32811.

It is an arithmetic number, because the mean of its divisors is an integer number (15134580).

Almost surely, 2^268213605 is an apocalyptic number.

It is an amenable number.

268213605 is a deficient number, since it is larger than the sum of its proper divisors (216092955).

268213605 is a wasteful number, since it uses less digits than its factorization.

268213605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56101.

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 268213605 is about 16377.2282453412. The cubic root of 268213605 is about 644.9018178780.

The spelling of 268213605 in words is "two hundred sixty-eight million, two hundred thirteen thousand, six hundred five".