6684512545 has 16 divisors (see below), whose sum is σ = 8185214592. Its totient is φ = 5239382400.

The previous prime is 6684512533. The next prime is 6684512551. The reversal of 6684512545 is 5452154866.

It is not a de Polignac number, because 6684512545 - 2¹³ = 6684504353 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6684512495 and 6684512504.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5527 + ... + 115756.

It is an arithmetic number, because the mean of its divisors is an integer number (511575912).

Almost surely, 2^6684512545 is an apocalyptic number.

It is an amenable number.

6684512545 is a deficient number, since it is larger than the sum of its proper divisors (1500702047).

6684512545 is a wasteful number, since it uses less digits than its factorization.

6684512545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121512.

The product of its digits is 1152000, while the sum is 46.

The square root of 6684512545 is about 81758.8682957390. The cubic root of 6684512545 is about 1883.7499229504.

The spelling of 6684512545 in words is "six billion, six hundred eighty-four million, five hundred twelve thousand, five hundred forty-five".