766945 has 8 divisors (see below), whose sum is σ = 927144. Its totient is φ = 609024.

The previous prime is 766943. The next prime is 766957. The reversal of 766945 is 549667.

It can be written as a sum of positive squares in 4 ways, for example, as 163216 + 603729 = 404^2 + 777^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 766945 - 2¹ = 766943 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (766943) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 297 + ... + 1273.

It is an arithmetic number, because the mean of its divisors is an integer number (115893).

2⁷⁶⁶⁹⁴⁵ is an apocalyptic number.

It is an amenable number.

766945 is a deficient number, since it is larger than the sum of its proper divisors (160199).

766945 is a wasteful number, since it uses less digits than its factorization.

766945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1139.

The product of its digits is 45360, while the sum is 37.

The square root of 766945 is about 875.7539608817. The cubic root of 766945 is about 91.5351870799.

It can be divided in two parts, 766 and 945, that added together give a triangular number (1711 = T₅₈).

The spelling of 766945 in words is "seven hundred sixty-six thousand, nine hundred forty-five".