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680260427 = 7112803141
BaseRepresentation
bin101000100010111…
…111001101001011
31202102000210212122
4220202333031023
52343121313202
6151300201455
722600055360
oct5042771513
91672023778
10680260427
11319a97800
1216b99928b
13aac1a682
14664ba467
153eac39a2
hex288bf34b

680260427 has 12 divisors (see below), whose sum is σ = 854543088. Its totient is φ = 530072400.

The previous prime is 680260417. The next prime is 680260499. The reversal of 680260427 is 724062086.

It is not a de Polignac number, because 680260427 - 212 = 680256331 is a prime.

It is not an unprimeable number, because it can be changed into a prime (680260417) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 400724 + ... + 402417.

It is an arithmetic number, because the mean of its divisors is an integer number (71211924).

Almost surely, 2680260427 is an apocalyptic number.

680260427 is a deficient number, since it is larger than the sum of its proper divisors (174282661).

680260427 is a wasteful number, since it uses less digits than its factorization.

680260427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 803170 (or 803159 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 35.

The square root of 680260427 is about 26081.8026025810. The cubic root of 680260427 is about 879.4781802174.

The spelling of 680260427 in words is "six hundred eighty million, two hundred sixty thousand, four hundred twenty-seven".

Divisors: 1 7 11 77 121 847 803141 5621987 8834551 61841857 97180061 680260427