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6688200680 = 235723886431
BaseRepresentation
bin1100011101010010…
…11101011111101000
3122021010000210112022
412032221131133220
5102144134410210
63023355204012
7324511524230
oct61651353750
918233023468
106688200680
112922351187
121367a46608
138278365c5
14476394cc0
15292279155
hex18ea5d7e8

6688200680 has 32 divisors (see below), whose sum is σ = 17198231040. Its totient is φ = 2293097280.

The previous prime is 6688200637. The next prime is 6688200689. The reversal of 6688200680 is 860028866.

It is not an unprimeable number, because it can be changed into a prime (6688200689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11942936 + ... + 11943495.

It is an arithmetic number, because the mean of its divisors is an integer number (537444720).

Almost surely, 26688200680 is an apocalyptic number.

It is an amenable number.

6688200680 is an abundant number, since it is smaller than the sum of its proper divisors (10510030360).

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

6688200680 is a wasteful number, since it uses less digits than its factorization.

6688200680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23886449 (or 23886445 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 44.

The square root of 6688200680 is about 81781.4201392957. The cubic root of 6688200680 is about 1884.0963080517.

The spelling of 6688200680 in words is "six billion, six hundred eighty-eight million, two hundred thousand, six hundred eighty".

Divisors: 1 2 4 5 7 8 10 14 20 28 35 40 56 70 140 280 23886431 47772862 95545724 119432155 167205017 191091448 238864310 334410034 477728620 668820068 836025085 955457240 1337640136 1672050170 3344100340 6688200680