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680478113 = 7791230521
BaseRepresentation
bin101000100011110…
…100010110100001
31202102102212111002
4220203310112201
52343200244423
6151305001345
722601653130
oct5043642641
91672385432
10680478113
1131a126307
1216ba83255
13aac95793
1466535917
153eb18228
hex288f45a1

680478113 has 8 divisors (see below), whose sum is σ = 787534080. Its totient is φ = 575883360.

The previous prime is 680478067. The next prime is 680478121. The reversal of 680478113 is 311874086.

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 680478113 - 222 = 676283809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (680478133) 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 7 ways as a sum of consecutive naturals, for example, 614708 + ... + 615813.

It is an arithmetic number, because the mean of its divisors is an integer number (98441760).

Almost surely, 2680478113 is an apocalyptic number.

It is an amenable number.

680478113 is a deficient number, since it is larger than the sum of its proper divisors (107055967).

680478113 is a wasteful number, since it uses less digits than its factorization.

680478113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1230607.

The product of its (nonzero) digits is 32256, while the sum is 38.

The square root of 680478113 is about 26085.9754082534. The cubic root of 680478113 is about 879.5719823660.

The spelling of 680478113 in words is "six hundred eighty million, four hundred seventy-eight thousand, one hundred thirteen".

Divisors: 1 7 79 553 1230521 8613647 97211159 680478113