768271321 has 4 divisors (see below), whose sum is σ = 768489444. Its totient is φ = 768053200.

The previous prime is 768271313. The next prime is 768271351. The reversal of 768271321 is 123172867.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 123172867 = 67 ⋅1838401.

It can be written as a sum of positive squares in 2 ways, for example, as 628204096 + 140067225 = 25064^2 + 11835^2 .

It is a cyclic number.

It is not a de Polignac number, because 768271321 - 2³ = 768271313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (768271351) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103690 + ... + 110851.

It is an arithmetic number, because the mean of its divisors is an integer number (192122361).

Almost surely, 2^768271321 is an apocalyptic number.

It is an amenable number.

768271321 is a deficient number, since it is larger than the sum of its proper divisors (218123).

768271321 is a wasteful number, since it uses less digits than its factorization.

768271321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218122.

The product of its digits is 28224, while the sum is 37.

The square root of 768271321 is about 27717.7077154659. The cubic root of 768271321 is about 915.8792233640.

It can be divided in two parts, 7682 and 71321, that added together give a triangular number (79003 = T₃₉₇).

The spelling of 768271321 in words is "seven hundred sixty-eight million, two hundred seventy-one thousand, three hundred twenty-one".