268085749 has 4 divisors (see below), whose sum is σ = 269198380. Its totient is φ = 266973120.

The previous prime is 268085747. The next prime is 268085759. The reversal of 268085749 is 947580862.

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 125283249 + 142802500 = 11193^2 + 11950^2 .

It is a cyclic number.

It is not a de Polignac number, because 268085749 - 2¹ = 268085747 is a prime.

It is a super-3 number, since 3×268085749³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268085747) 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, 555954 + ... + 556435.

It is an arithmetic number, because the mean of its divisors is an integer number (67299595).

Almost surely, 2^268085749 is an apocalyptic number.

It is an amenable number.

268085749 is a deficient number, since it is larger than the sum of its proper divisors (1112631).

268085749 is a wasteful number, since it uses less digits than its factorization.

268085749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1112630.

The product of its (nonzero) digits is 967680, while the sum is 49.

The square root of 268085749 is about 16373.3243112082. The cubic root of 268085749 is about 644.7993278344.

The spelling of 268085749 in words is "two hundred sixty-eight million, eighty-five thousand, seven hundred forty-nine".