766436 has 12 divisors (see below), whose sum is σ = 1463280. Its totient is φ = 348360.

The previous prime is 766421. The next prime is 766439. The reversal of 766436 is 634667.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 766436.

It is not an unprimeable number, because it can be changed into a prime (766439) by changing a digit.

766436 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8666 + ... + 8753.

It is an arithmetic number, because the mean of its divisors is an integer number (121940).

2⁷⁶⁶⁴³⁶ is an apocalyptic number.

It is an amenable number.

766436 is a deficient number, since it is larger than the sum of its proper divisors (696844).

766436 is a wasteful number, since it uses less digits than its factorization.

766436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17434 (or 17432 counting only the distinct ones).

The product of its digits is 18144, while the sum is 32.

The square root of 766436 is about 875.4633059129. The cubic root of 766436 is about 91.5149328152.

Subtracting from 766436 its reverse (634667), we obtain a square (131769 = 363²).

The spelling of 766436 in words is "seven hundred sixty-six thousand, four hundred thirty-six".