995991680 has 64 divisors (see below), whose sum is σ = 2439181080. Its totient is φ = 388669440.

The previous prime is 995991673. The next prime is 995991683. The reversal of 995991680 is 86199599.

It can be written as a sum of positive squares in 4 ways, for example, as 224041024 + 771950656 = 14968^2 + 27784^2 .

It is a tau number, because it is divible by the number of its divisors (64).

It is not an unprimeable number, because it can be changed into a prime (995991683) 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 7 ways as a sum of consecutive naturals, for example, 7262 + ... + 45218.

Almost surely, 2^995991680 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 995991680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1219590540).

995991680 is an abundant number, since it is smaller than the sum of its proper divisors (1443189400).

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

995991680 is a wasteful number, since it uses less digits than its factorization.

995991680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38017 (or 38005 counting only the distinct ones).

The product of its (nonzero) digits is 1574640, while the sum is 56.

The square root of 995991680 is about 31559.3358611996. The cubic root of 995991680 is about 998.6621041663.

The spelling of 995991680 in words is "nine hundred ninety-five million, nine hundred ninety-one thousand, six hundred eighty".