766386 has 12 divisors (see below), whose sum is σ = 1660542. Its totient is φ = 255456.

The previous prime is 766373. The next prime is 766387. The reversal of 766386 is 683667.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 497025 + 269361 = 705^2 + 519^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 766386.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (766387) by changing a digit.

766386 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 5 ways as a sum of consecutive naturals, for example, 21271 + ... + 21306.

2⁷⁶⁶³⁸⁶ is an apocalyptic number.

766386 is an abundant number, since it is smaller than the sum of its proper divisors (894156).

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

766386 is a wasteful number, since it uses less digits than its factorization.

766386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42585 (or 42582 counting only the distinct ones).

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

The square root of 766386 is about 875.4347491390. The cubic root of 766386 is about 91.5129427181.

The spelling of 766386 in words is "seven hundred sixty-six thousand, three hundred eighty-six".