766529 has 4 divisors (see below), whose sum is σ = 787284. Its totient is φ = 745776.

The previous prime is 766511. The next prime is 766531. The reversal of 766529 is 925667.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 313600 + 452929 = 560^2 + 673^2 .

It is a cyclic number.

It is not a de Polignac number, because 766529 - 2⁸ = 766273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (766559) 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, 10322 + ... + 10395.

It is an arithmetic number, because the mean of its divisors is an integer number (196821).

2⁷⁶⁶⁵²⁹ is an apocalyptic number.

It is an amenable number.

766529 is a deficient number, since it is larger than the sum of its proper divisors (20755).

766529 is a wasteful number, since it uses less digits than its factorization.

766529 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20754.

The product of its digits is 22680, while the sum is 35.

The square root of 766529 is about 875.5164190351. The cubic root of 766529 is about 91.5186341656.

The spelling of 766529 in words is "seven hundred sixty-six thousand, five hundred twenty-nine".