766841 has 4 divisors (see below), whose sum is σ = 768612. Its totient is φ = 765072.

The previous prime is 766817. The next prime is 766861. The reversal of 766841 is 148667.

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 160000 + 606841 = 400^2 + 779^2 .

It is a cyclic number.

It is not a de Polignac number, because 766841 - 2¹⁴ = 750457 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 766798 and 766807.

It is not an unprimeable number, because it can be changed into a prime (766811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 251 + ... + 1263.

It is an arithmetic number, because the mean of its divisors is an integer number (192153).

2⁷⁶⁶⁸⁴¹ is an apocalyptic number.

It is an amenable number.

766841 is a deficient number, since it is larger than the sum of its proper divisors (1771).

766841 is a wasteful number, since it uses less digits than its factorization.

766841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1770.

The product of its digits is 8064, while the sum is 32.

The square root of 766841 is about 875.6945814609. The cubic root of 766841 is about 91.5310494126.

The spelling of 766841 in words is "seven hundred sixty-six thousand, eight hundred forty-one".