268682789 has 8 divisors (see below), whose sum is σ = 276273528. Its totient is φ = 261109440.

The previous prime is 268682783. The next prime is 268682801. The reversal of 268682789 is 987286862.

It can be written as a sum of positive squares in 4 ways, for example, as 105226564 + 163456225 = 10258^2 + 12785^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-268682789 is a prime.

It is a super-2 number, since 2×268682789² = 144380882209637042, which contains 22 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 (268682783) 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, 30959 + ... + 38675.

It is an arithmetic number, because the mean of its divisors is an integer number (34534191).

Almost surely, 2^268682789 is an apocalyptic number.

It is an amenable number.

268682789 is a deficient number, since it is larger than the sum of its proper divisors (7590739).

268682789 is an equidigital number, since it uses as much as digits as its factorization.

268682789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8695.

The product of its digits is 4644864, while the sum is 56.

The square root of 268682789 is about 16391.5462662923. The cubic root of 268682789 is about 645.2776394221.

The spelling of 268682789 in words is "two hundred sixty-eight million, six hundred eighty-two thousand, seven hundred eighty-nine".