766836 has 72 divisors (see below), whose sum is σ = 2358720. Its totient is φ = 205056.

The previous prime is 766817. The next prime is 766861. The reversal of 766836 is 638667.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 766836.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4195 + ... + 4373.

It is an arithmetic number, because the mean of its divisors is an integer number (32760).

2⁷⁶⁶⁸³⁶ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 766836, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1179360).

766836 is an abundant number, since it is smaller than the sum of its proper divisors (1591884).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

766836 is a wasteful number, since it uses less digits than its factorization.

766836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213 (or 208 counting only the distinct ones).

The product of its digits is 36288, while the sum is 36.

The square root of 766836 is about 875.6917265796. The cubic root of 766836 is about 91.5308504769.

The spelling of 766836 in words is "seven hundred sixty-six thousand, eight hundred thirty-six".