5609610640 has 20 divisors (see below), whose sum is σ = 13042344924. Its totient is φ = 2243844224.

The previous prime is 5609610551. The next prime is 5609610719. The reversal of 5609610640 is 460169065.

It can be written as a sum of positive squares in 2 ways, for example, as 1870043536 + 3739567104 = 43244^2 + 61152^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a self number, because there is not a number n which added to its sum of digits gives 5609610640.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35059987 + ... + 35060146.

Almost surely, 2^5609610640 is an apocalyptic number.

It is an amenable number.

5609610640 is an abundant number, since it is smaller than the sum of its proper divisors (7432734284).

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

5609610640 is a wasteful number, since it uses less digits than its factorization.

5609610640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70120146 (or 70120140 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 37.

The square root of 5609610640 is about 74897.3339979468. Note that the first 3 decimals coincide. The cubic root of 5609610640 is about 1776.8232950059.

The spelling of 5609610640 in words is "five billion, six hundred nine million, six hundred ten thousand, six hundred forty".