766820285 has 32 divisors (see below), whose sum is σ = 1156349952. Its totient is φ = 474223680.

The previous prime is 766820281. The next prime is 766820287. The reversal of 766820285 is 582028667.

766820285 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 766820285 - 2² = 766820281 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (766820281) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 41054 + ... + 56736.

It is an arithmetic number, because the mean of its divisors is an integer number (36135936).

Almost surely, 2^766820285 is an apocalyptic number.

It is an amenable number.

766820285 is a deficient number, since it is larger than the sum of its proper divisors (389529667).

766820285 is a wasteful number, since it uses less digits than its factorization.

766820285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15833.

The product of its (nonzero) digits is 322560, while the sum is 44.

The square root of 766820285 is about 27691.5200918982. The cubic root of 766820285 is about 915.3022521621.

The spelling of 766820285 in words is "seven hundred sixty-six million, eight hundred twenty thousand, two hundred eighty-five".