768205 has 4 divisors (see below), whose sum is σ = 921852. Its totient is φ = 614560.

The previous prime is 768203. The next prime is 768221. The reversal of 768205 is 502867.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 502867 = 37 ⋅13591.

It can be written as a sum of positive squares in 2 ways, for example, as 432964 + 335241 = 658^2 + 579^2 .

It is not a de Polignac number, because 768205 - 2¹ = 768203 is a prime.

It is a Duffinian number.

768205 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (768203) 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, 76816 + ... + 76825.

It is an arithmetic number, because the mean of its divisors is an integer number (230463).

2⁷⁶⁸²⁰⁵ is an apocalyptic number.

It is an amenable number.

768205 is a deficient number, since it is larger than the sum of its proper divisors (153647).

768205 is a wasteful number, since it uses less digits than its factorization.

768205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153646.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 768205 is about 876.4730457921. The cubic root of 768205 is about 91.5852868190.

It can be divided in two parts, 76 and 8205, that added together give a square (8281 = 91²).

The spelling of 768205 in words is "seven hundred sixty-eight thousand, two hundred five".