766538 has 8 divisors (see below), whose sum is σ = 1153632. Its totient is φ = 381996.

The previous prime is 766531. The next prime is 766541. The reversal of 766538 is 835667.

It is a happy number.

766538 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 766498 and 766507.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 766538.

It is not an unprimeable number, because it can be changed into a prime (766531) 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, 581 + ... + 1367.

It is an arithmetic number, because the mean of its divisors is an integer number (144204).

2⁷⁶⁶⁵³⁸ is an apocalyptic number.

766538 is a deficient number, since it is larger than the sum of its proper divisors (387094).

766538 is a wasteful number, since it uses less digits than its factorization.

766538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1276.

The product of its digits is 30240, while the sum is 35.

The square root of 766538 is about 875.5215588436. The cubic root of 766538 is about 91.5189923449.

The spelling of 766538 in words is "seven hundred sixty-six thousand, five hundred thirty-eight".