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669006543 = 3239695747
BaseRepresentation
bin100111111000000…
…011101011001111
31201121212001110010
4213320003223033
52332231202133
6150215044303
722402314252
oct4770035317
91647761403
10669006543
11313700577
12168070693
13a87aa17a
1464bcb099
153daee263
hex27e03acf

669006543 has 8 divisors (see below), whose sum is σ = 930791808. Its totient is φ = 426612824.

The previous prime is 669006521. The next prime is 669006563. The reversal of 669006543 is 345600966.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 669006543 - 212 = 669002447 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (669006563) 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 in 7 ways as a sum of consecutive naturals, for example, 4847805 + ... + 4847942.

It is an arithmetic number, because the mean of its divisors is an integer number (116348976).

Almost surely, 2669006543 is an apocalyptic number.

669006543 is a deficient number, since it is larger than the sum of its proper divisors (261785265).

669006543 is a wasteful number, since it uses less digits than its factorization.

669006543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9695773.

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

The square root of 669006543 is about 25865.1607959433. The cubic root of 669006543 is about 874.6013064718.

The spelling of 669006543 in words is "six hundred sixty-nine million, six thousand, five hundred forty-three".

Divisors: 1 3 23 69 9695747 29087241 223002181 669006543