268005505 has 4 divisors (see below), whose sum is σ = 321606612. Its totient is φ = 214404400.

The previous prime is 268005503. The next prime is 268005539. The reversal of 268005505 is 505500862.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 43125489 + 224880016 = 6567^2 + 14996^2 .

It is not a de Polignac number, because 268005505 - 2¹ = 268005503 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (268005503) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26800546 + ... + 26800555.

It is an arithmetic number, because the mean of its divisors is an integer number (80401653).

Almost surely, 2^268005505 is an apocalyptic number.

It is an amenable number.

268005505 is a deficient number, since it is larger than the sum of its proper divisors (53601107).

268005505 is an equidigital number, since it uses as much as digits as its factorization.

268005505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53601106.

The product of its (nonzero) digits is 12000, while the sum is 31.

The square root of 268005505 is about 16370.8736785793. The cubic root of 268005505 is about 644.7349871763.

The spelling of 268005505 in words is "two hundred sixty-eight million, five thousand, five hundred five".