6551989064 has 16 divisors (see below), whose sum is σ = 12300601200. Its totient is φ = 3271828752.

The previous prime is 6551989061. The next prime is 6551989121. The reversal of 6551989064 is 4609891556.

It is a happy number.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 6551988997 and 6551989015.

It is not an unprimeable number, because it can be changed into a prime (6551989061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 514034 + ... + 526625.

It is an arithmetic number, because the mean of its divisors is an integer number (768787575).

Almost surely, 2^6551989064 is an apocalyptic number.

It is an amenable number.

6551989064 is a deficient number, since it is larger than the sum of its proper divisors (5748612136).

6551989064 is a wasteful number, since it uses less digits than its factorization.

6551989064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1041452 (or 1041448 counting only the distinct ones).

The product of its (nonzero) digits is 2332800, while the sum is 53.

The square root of 6551989064 is about 80944.3578268430. The cubic root of 6551989064 is about 1871.2180063805.

The spelling of 6551989064 in words is "six billion, five hundred fifty-one million, nine hundred eighty-nine thousand, sixty-four".