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6669304090 = 257329331181
BaseRepresentation
bin1100011011000010…
…11000000100011010
3122012210110202021121
412031201120010122
5102124320212330
63021442155454
7324162102151
oct61541300432
918183422247
106669304090
112912714969
121361652b8a
1382394b4a7
14473a76598
1529079517a
hex18d85811a

6669304090 has 32 divisors (see below), whose sum is σ = 12211120656. Its totient is φ = 2622113280.

The previous prime is 6669304027. The next prime is 6669304091. The reversal of 6669304090 is 904039666.

It can be written as a sum of positive squares in 8 ways, for example, as 2816743329 + 3852560761 = 53073^2 + 62069^2 .

It is not an unprimeable number, because it can be changed into a prime (6669304091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 198300 + ... + 229480.

Almost surely, 26669304090 is an apocalyptic number.

6669304090 is a deficient number, since it is larger than the sum of its proper divisors (5541816566).

6669304090 is a wasteful number, since it uses less digits than its factorization.

6669304090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31554.

The product of its (nonzero) digits is 209952, while the sum is 43.

The square root of 6669304090 is about 81665.8073492205. The cubic root of 6669304090 is about 1882.3202160780.

The spelling of 6669304090 in words is "six billion, six hundred sixty-nine million, three hundred four thousand, ninety".

Divisors: 1 2 5 10 73 146 293 365 586 730 1465 2930 21389 31181 42778 62362 106945 155905 213890 311810 2276213 4552426 9136033 11381065 18272066 22762130 45680165 91360330 666930409 1333860818 3334652045 6669304090