766849 has 4 divisors (see below), whose sum is σ = 769860. Its totient is φ = 763840.

The previous prime is 766817. The next prime is 766861. The reversal of 766849 is 948667.

766849 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 948667 = 971 ⋅977.

It can be written as a sum of positive squares in 2 ways, for example, as 651249 + 115600 = 807^2 + 340^2 .

It is a cyclic number.

It is not a de Polignac number, because 766849 - 2⁵ = 766817 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (766049) 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, 1084 + ... + 1645.

It is an arithmetic number, because the mean of its divisors is an integer number (192465).

2⁷⁶⁶⁸⁴⁹ is an apocalyptic number.

It is an amenable number.

766849 is a deficient number, since it is larger than the sum of its proper divisors (3011).

766849 is a wasteful number, since it uses less digits than its factorization.

766849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3010.

The product of its digits is 72576, while the sum is 40.

The square root of 766849 is about 875.6991492516. The cubic root of 766849 is about 91.5313677080.

The spelling of 766849 in words is "seven hundred sixty-six thousand, eight hundred forty-nine".