6684589953 has 6 divisors (see below), whose sum is σ = 9655518834. Its totient is φ = 4456393296.

The previous prime is 6684589943. The next prime is 6684589957. The reversal of 6684589953 is 3599854866.

It can be written as a sum of positive squares in only one way, i.e., 4703627889 + 1980962064 = 68583^2 + 44508^2 .

It is not a de Polignac number, because 6684589953 - 2¹⁶ = 6684524417 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6684589957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 371366100 + ... + 371366117.

It is an arithmetic number, because the mean of its divisors is an integer number (1609253139).

Almost surely, 2^6684589953 is an apocalyptic number.

It is an amenable number.

6684589953 is a deficient number, since it is larger than the sum of its proper divisors (2970928881).

6684589953 is a wasteful number, since it uses less digits than its factorization.

6684589953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 742732223 (or 742732220 counting only the distinct ones).

The product of its digits is 55987200, while the sum is 63.

The square root of 6684589953 is about 81759.3416864397. The cubic root of 6684589953 is about 1883.7571943234.

The spelling of 6684589953 in words is "six billion, six hundred eighty-four million, five hundred eighty-nine thousand, nine hundred fifty-three".