836807680 has 88 divisors (see below), whose sum is σ = 2017392192. Its totient is φ = 333053952.

The previous prime is 836807669. The next prime is 836807681. The reversal of 836807680 is 86708638.

It is a self number, because there is not a number n which added to its sum of digits gives 836807680.

It is not an unprimeable number, because it can be changed into a prime (836807681) 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, 1807129 + ... + 1807591.

Almost surely, 2^836807680 is an apocalyptic number.

836807680 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 836807680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1008696096).

836807680 is an abundant number, since it is smaller than the sum of its proper divisors (1180584512).

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

836807680 is a wasteful number, since it uses less digits than its factorization.

836807680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 841 (or 823 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 46.

The square root of 836807680 is about 28927.6283161963. The cubic root of 836807680 is about 942.3420097431.

The spelling of 836807680 in words is "eight hundred thirty-six million, eight hundred seven thousand, six hundred eighty".