268684457 has 8 divisors (see below), whose sum is σ = 272700360. Its totient is φ = 264677760.

The previous prime is 268684447. The next prime is 268684483. The reversal of 268684457 is 754486862.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 10471696 + 258212761 = 3236^2 + 16069^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 268684457 - 2¹⁰ = 268683433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (268684447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75719 + ... + 79187.

It is an arithmetic number, because the mean of its divisors is an integer number (34087545).

Almost surely, 2^268684457 is an apocalyptic number.

It is an amenable number.

268684457 is a deficient number, since it is larger than the sum of its proper divisors (4015903).

268684457 is a wasteful number, since it uses less digits than its factorization.

268684457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4603.

The product of its digits is 2580480, while the sum is 50.

The square root of 268684457 is about 16391.5971460990. The cubic root of 268684457 is about 645.2789747277.

The spelling of 268684457 in words is "two hundred sixty-eight million, six hundred eighty-four thousand, four hundred fifty-seven".