768844213 has 4 divisors (see below), whose sum is σ = 776770540. Its totient is φ = 760917888.

The previous prime is 768844199. The next prime is 768844217. The reversal of 768844213 is 312448867.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 312448867 = 15467 ⋅20201.

It can be written as a sum of positive squares in 2 ways, for example, as 557054404 + 211789809 = 23602^2 + 14553^2 .

It is a cyclic number.

It is not a de Polignac number, because 768844213 - 2²⁵ = 735289781 is a prime.

It is a super-2 number, since 2×768844213² = 1182242847727178738, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 768844213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (768844217) by changing a digit.

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, 3963018 + ... + 3963211.

It is an arithmetic number, because the mean of its divisors is an integer number (194192635).

Almost surely, 2^768844213 is an apocalyptic number.

It is an amenable number.

768844213 is a deficient number, since it is larger than the sum of its proper divisors (7926327).

768844213 is an equidigital number, since it uses as much as digits as its factorization.

768844213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7926326.

The product of its digits is 258048, while the sum is 43.

The square root of 768844213 is about 27728.0401939986. The cubic root of 768844213 is about 916.1068206978.

The spelling of 768844213 in words is "seven hundred sixty-eight million, eight hundred forty-four thousand, two hundred thirteen".