5681590920 has 96 divisors (see below), whose sum is σ = 18482045400. Its totient is φ = 1513706496.

The previous prime is 5681590877. The next prime is 5681590921. The reversal of 5681590920 is 290951865.

5681590920 is a `hidden beast` number, since 56 + 8 + 1 + 590 + 9 + 2 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 5643915876 + 37675044 = 75126^2 + 6138^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (5681590921) 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 23 ways as a sum of consecutive naturals, for example, 422866 + ... + 436094.

Almost surely, 2^5681590920 is an apocalyptic number.

It is an amenable number.

5681590920 is an abundant number, since it is smaller than the sum of its proper divisors (12800454480).

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

5681590920 is a wasteful number, since it uses less digits than its factorization.

5681590920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14439 (or 14432 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 45.

The square root of 5681590920 is about 75376.3286450063. The cubic root of 5681590920 is about 1784.3908473887.

The spelling of 5681590920 in words is "five billion, six hundred eighty-one million, five hundred ninety thousand, nine hundred twenty".