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6666666688 = 261117557041
BaseRepresentation
bin1100011010101110…
…10100001011000000
3122012121111202110001
412031113110023000
5102123131313223
63021305445344
7324130506013
oct61527241300
918177452401
106666666688
1129111833a0
1213607a0854
13823236bb6
1447358b37a
152904239ad
hex18d5d42c0

6666666688 has 56 divisors (see below), whose sum is σ = 15280776144. Its totient is φ = 2852044800.

The previous prime is 6666666661. The next prime is 6666666757. The reversal of 6666666688 is 8866666666.

It is a Harshad number since it is a multiple of its sum of digits (64).

It is a plaindrome in base 10.

It is a zygodrome in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 266553 + ... + 290488.

Almost surely, 26666666688 is an apocalyptic number.

6666666688 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

6666666688 is an abundant number, since it is smaller than the sum of its proper divisors (8614109456).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6666666688 is a wasteful number, since it uses less digits than its factorization.

6666666688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 557081 (or 557071 counting only the distinct ones).

The product of its digits is 107495424, while the sum is 64.

The square root of 6666666688 is about 81649.6582234121. The cubic root of 6666666688 is about 1882.0720597696.

The spelling of 6666666688 in words is "six billion, six hundred sixty-six million, six hundred sixty-six thousand, six hundred eighty-eight".

Divisors: 1 2 4 8 11 16 17 22 32 34 44 64 68 88 136 176 187 272 352 374 544 704 748 1088 1496 2992 5984 11968 557041 1114082 2228164 4456328 6127451 8912656 9469697 12254902 17825312 18939394 24509804 35650624 37878788 49019608 75757576 98039216 104166667 151515152 196078432 208333334 303030304 392156864 416666668 606060608 833333336 1666666672 3333333344 6666666688