766522 has 4 divisors (see below), whose sum is σ = 1149786. Its totient is φ = 383260.

The previous prime is 766511. The next prime is 766531. The reversal of 766522 is 225667.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 225667 = 13 ⋅17359.

It can be written as a sum of positive squares in only one way, i.e., 395641 + 370881 = 629^2 + 609^2 .

It is a nialpdrome in base 10.

It is an unprimeable 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 as a sum of consecutive naturals, namely, 191629 + ... + 191632.

2⁷⁶⁶⁵²² is an apocalyptic number.

766522 is a deficient number, since it is larger than the sum of its proper divisors (383264).

766522 is a wasteful number, since it uses less digits than its factorization.

766522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 383263.

The product of its digits is 5040, while the sum is 28.

The square root of 766522 is about 875.5124213853. The cubic root of 766522 is about 91.5183555797.

The spelling of 766522 in words is "seven hundred sixty-six thousand, five hundred twenty-two".