766961 has 4 divisors (see below), whose sum is σ = 825972. Its totient is φ = 707952.

The previous prime is 766957. The next prime is 766967. The reversal of 766961 is 169667.

It is a happy number.

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 250000 + 516961 = 500^2 + 719^2 .

It is a cyclic number.

It is not a de Polignac number, because 766961 - 2² = 766957 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (766967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29486 + ... + 29511.

It is an arithmetic number, because the mean of its divisors is an integer number (206493).

2⁷⁶⁶⁹⁶¹ is an apocalyptic number.

It is an amenable number.

766961 is a deficient number, since it is larger than the sum of its proper divisors (59011).

766961 is a wasteful number, since it uses less digits than its factorization.

766961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59010.

The product of its digits is 13608, while the sum is 35.

The square root of 766961 is about 875.7630958199. The cubic root of 766961 is about 91.5358236109.

The spelling of 766961 in words is "seven hundred sixty-six thousand, nine hundred sixty-one".