5640630609 has 4 divisors (see below), whose sum is σ = 7520840816. Its totient is φ = 3760420404.

The previous prime is 5640630581. The next prime is 5640630613. The reversal of 5640630609 is 9060360465.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 5640630609 - 2¹³ = 5640622417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5640630409) 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 3 ways as a sum of consecutive naturals, for example, 940105099 + ... + 940105104.

It is an arithmetic number, because the mean of its divisors is an integer number (1880210204).

Almost surely, 2^5640630609 is an apocalyptic number.

It is an amenable number.

5640630609 is a deficient number, since it is larger than the sum of its proper divisors (1880210207).

5640630609 is a wasteful number, since it uses less digits than its factorization.

5640630609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1880210206.

The product of its (nonzero) digits is 116640, while the sum is 39.

The square root of 5640630609 is about 75104.1317704958. The cubic root of 5640630609 is about 1780.0924297625.

The spelling of 5640630609 in words is "five billion, six hundred forty million, six hundred thirty thousand, six hundred nine".