268286465 has 4 divisors (see below), whose sum is σ = 321943764. Its totient is φ = 214629168.

The previous prime is 268286443. The next prime is 268286471. The reversal of 268286465 is 564682862.

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 147088384 + 121198081 = 12128^2 + 11009^2 .

It is a cyclic number.

It is not a de Polignac number, because 268286465 - 2¹² = 268282369 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26828642 + ... + 26828651.

It is an arithmetic number, because the mean of its divisors is an integer number (80485941).

Almost surely, 2^268286465 is an apocalyptic number.

It is an amenable number.

268286465 is a deficient number, since it is larger than the sum of its proper divisors (53657299).

268286465 is an equidigital number, since it uses as much as digits as its factorization.

268286465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53657298.

The product of its digits is 1105920, while the sum is 47.

The square root of 268286465 is about 16379.4525244283. The cubic root of 268286465 is about 644.9602082697.

The spelling of 268286465 in words is "two hundred sixty-eight million, two hundred eighty-six thousand, four hundred sixty-five".