268409785 has 8 divisors (see below), whose sum is σ = 368104896. Its totient is φ = 184052400.

The previous prime is 268409783. The next prime is 268409797. The reversal of 268409785 is 587904862.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 268409785 - 2¹ = 268409783 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (268409783) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3834391 + ... + 3834460.

It is an arithmetic number, because the mean of its divisors is an integer number (46013112).

Almost surely, 2^268409785 is an apocalyptic number.

It is an amenable number.

268409785 is a deficient number, since it is larger than the sum of its proper divisors (99695111).

268409785 is an equidigital number, since it uses as much as digits as its factorization.

268409785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7668863.

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

The square root of 268409785 is about 16383.2165645211. The cubic root of 268409785 is about 645.0590134896.

The spelling of 268409785 in words is "two hundred sixty-eight million, four hundred nine thousand, seven hundred eighty-five".