766826005 has 12 divisors (see below), whose sum is σ = 1011450636. Its totient is φ = 557691200.

The previous prime is 766825991. The next prime is 766826029. The reversal of 766826005 is 500628667.

It can be written as a sum of positive squares in 2 ways, for example, as 289578289 + 477247716 = 17017^2 + 21846^2 .

It is not a de Polignac number, because 766826005 - 2⁵ = 766825973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 633136 + ... + 634345.

It is an arithmetic number, because the mean of its divisors is an integer number (84287553).

Almost surely, 2^766826005 is an apocalyptic number.

It is an amenable number.

766826005 is a deficient number, since it is larger than the sum of its proper divisors (244624631).

766826005 is a wasteful number, since it uses less digits than its factorization.

766826005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1267508 (or 1267497 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 40.

The square root of 766826005 is about 27691.6233724208. The cubic root of 766826005 is about 915.3045280173.

The spelling of 766826005 in words is "seven hundred sixty-six million, eight hundred twenty-six thousand, five".