6550640422 has 4 divisors (see below), whose sum is σ = 9825960636. Its totient is φ = 3275320210.

The previous prime is 6550640401. The next prime is 6550640423. The reversal of 6550640422 is 2240460556.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6550640423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1637660104 + ... + 1637660107.

It is an arithmetic number, because the mean of its divisors is an integer number (2456490159).

Almost surely, 2^6550640422 is an apocalyptic number.

6550640422 is a deficient number, since it is larger than the sum of its proper divisors (3275320214).

6550640422 is a wasteful number, since it uses less digits than its factorization.

6550640422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3275320213.

The product of its (nonzero) digits is 57600, while the sum is 34.

The square root of 6550640422 is about 80936.0267248152. The cubic root of 6550640422 is about 1871.0896089153.

The spelling of 6550640422 in words is "six billion, five hundred fifty million, six hundred forty thousand, four hundred twenty-two".