766835856 has 80 divisors (see below), whose sum is σ = 2252345920. Its totient is φ = 249661440.

The previous prime is 766835851. The next prime is 766835863. The reversal of 766835856 is 658538667.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (766835851) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2065 + ... + 39216.

It is an arithmetic number, because the mean of its divisors is an integer number (28154324).

Almost surely, 2^766835856 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 766835856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1126172960).

766835856 is an abundant number, since it is smaller than the sum of its proper divisors (1485510064).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

766835856 is a wasteful number, since it uses less digits than its factorization.

766835856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41341 (or 41329 counting only the distinct ones).

The product of its digits is 7257600, while the sum is 54.

The square root of 766835856 is about 27691.8012415227. The cubic root of 766835856 is about 915.3084474750.

The spelling of 766835856 in words is "seven hundred sixty-six million, eight hundred thirty-five thousand, eight hundred fifty-six".